Let's start our topic with a question. What is the meaning of 'special' in your life? What days have been special to you, your family, or even to your community? The answer may vary from mere personal occasions like birthdays, anniversaries, etc. to more public ones such as New Year's Eve, Easters, or any National Day. The same is true about every religion, culture, or society. Different days of the year have different meanings in every religious community; such as Laylatul Qadr for Muslims. 

Everything that the Almighty God has created is Noble

 "(He) Who perfected everything which He created" (Quran 32:7) 

 "…So whichever way you turn, there is the face of Allah! Allah is indeed all-bounteous, all-knowing." Quran (2:115)

"There is nothing in existence but beauty, for God created the cosmos only in His image, that is, in the image of His infinite beauty." Ibn Arabi [i], [1]& [2].

This does not, however, mean that all creatures are the same! Can river stones be equal to those of precious pearls in the oceans? The world is the world of differences, and that actually makes it delightful and adventurous. This is also manifested in people's different languages and colors, which is a sign of Allah's balanced and sophisticated creation.  

"And of His signs is … the diversity of your languages and your colors. Indeed in that are signs for those of knowledge" (Quran 30:22)

If every stone were like a pearl would have the pearl had the same value that it has now? How about the days of the year? God is indeed in All Days, but again this is God's plan for us to value specific days or nights more than others. The Islamic Holy scripture refers to a night that has the value as equal to a thousand months, called Laylatul Qadr, the Night of Decree. Likewise, the month of Ramadan or that of Dhul Hijja has special significance in Islam during which distinct rituals and etiquettes are prescribed for Muslims.  What is it that really makes them unique? For that, we will have to take a look at Islamic resources. 

Which Days or Nights Are Superior in Islam?

As indicated earlier, certain nights and days are adored in Islamic culture.

In a week, Friday does not only mark the weekend, but it has a special meaning for Muslims. The Surah "al-Juma" in the Quran declares the importance of the Friday prayer that is a congregational prayer held at Friday noon, and it is also referred to as the "the pilgrimage of the poor" in Islamic traditions. 'Forgiveness of sins,' 'reduction of the difficulties in the Day of Judgment,' and 'great rewards for every step to the place of the Friday prayer' are only a scratch over the surface of the benefits of this ritual for those who attend it [3]. 

In a year, the three months of Rajab, Shaban, and Ramadan are highly appreciated. It is narrated that Prophet Muhammad (PBUH&HP) has said: "Indeed Rajab is the month of Allah, while Shaban is my month and Ramadan is the month of my community" [4]. Ramadan is the month in which the Quran was revealed to the Prophet (PBUH&HP). It is also the month of fasting for Muslims [5]. 

In a grand tradition, the Prophet (PBUH&HP) narrates that Allah (SWT) said: "Fasting is for me, and I am the one who rewards for it" [6], "The gates of the fire are closed (in this month), so ask your Lord not to open them and Satans are in chains. So ask your Lord not to dominate them over you." This month is the best month in the sight of Allah, its days are the best, its nights are the best nights and its hours are the best hours… your breath in it (the month of Ramadan) is glorification (of God), and your sleep in it is worship" [7].

The Night of Decree (Laylatul Qadr) 

Moreover, it is in this month that the Night of Decree (Laylatul Qadr) is celebrated. A night that is regarded as equal to a thousand months, and it is when humankind's destiny is decreed for the coming year. It was on this night that the Holy Quran was revealed to the Prophet [8]. Indeed, Ramadan is the best month, and the Night of Qadr (Decree) is its heart. Believers stay awake the entire night and pray for blessings and forgiveness. It is the holiest night of the year, and it would be unwise to be heedless of the tremendous benefits of this night. It is a grand opportunity that God has gifted us with; there is a night that our whole year is decreed and if praying that night, we can ask Him to bless us with a year full of the happiness, the spirituality, the health and the success and whatever good we want in our lives. That's how God gives us the chance to rebuild our destiny, and a new beginning of our spiritual calendars, to ask forgiveness for the sins we have committed in the past year while praying for a better fate in the coming year.

The above briefly indicates how some days, months, and nights are special in Islam. The question now remains how we are going to use them and benefit from them.  When we are invited to such a special feast undoubtedly, we have to get prepared and plan for it; otherwise, we gain nothing but regret.

That's the beauty of having faith. Your days and nights are not equal. Each and every one of them has their own distinct meanings. It makes the spiritual journey of a servant sweeter and more enjoyable. He/she has always something to do to get closer to His Lord.

Notes:

[i] An Arab Andalusian Muslim scholar, mystic, poet, and philosopher, whose works have grown to be very influential. 

References:

1.  Claude Addas, The Experience and Doctrine of Love in Ibn Arab, http://www.ibnarabisociety.org/addas1.html 
2. William C. Chittick, The Divine Roots of Human Love,
3. divine roots
4.  Al-'Allama al-Majlisi, Bihar al-Anwar, vol. 86, p. 197, Al-Shaykh al-Saduq, Man la yahduruh al-faqih, vol. 1, p. 427, Nuri, 
5.  Al-'Allama al-Majlisi, Bihar al-Anwar, vol. 104, p. 123.
6. The Quran 2:183&5
7. Shaykh al-Hurr al-Amili, Wasā'il al-Shi'ah, vol. 10, p.400.
8. Al-Shaykh al-Saduq, Al-Amāli, p.95.
9. The Quran, Chapter 97th. 

All Abrahamic religions believe in the return of the savior, the liberator of the human beings and redeemer, in the End-Time. Prophets and divine messengers have promised the day that the whole universe will be full of justice and tenderness. Other religions also have similar beliefs, although they differ in some minor aspects, which will be discussed below. We go through references from different religions and faiths to examine their views about the last savior. 

Kalki: The Last Savior in Hinduism

In Upanishads, which is a collection of ancient Sanskrit texts that contain some of the central philosophical concepts and ideas of Hinduism, the last savior is called Kalki. He is believed to be the tenth avatar of Hindu god Vishnu in the last of the four stages in the endless cycle of existence known as "Samsara," which is defined "as the endless cycle of birth, death, and rebirth. Or as the world of suffering and dissatisfaction (dukkha)" [1].  He rides a white horse with a fiery sword. He will end the darkest and destructive period to remove adharma [i] and will usher in the Satya Yuga [ii][2]. 

Another reference talks about a just commander at the end-time who is the leader of angels and humans, who knows the truth and gets hold of everything from deep in the seas too high in the mountains, and no one greater than him will come to earth [3].

Saoshyant: The Eschatological Savior in Zoroastrianism

In Zoroastrianism, there are three saviors who each will rise in a thousand years. The last one is an eschatological savior figure who will destroy evil and will bring about the renovation of the world. He is called Saoshyant, which means the beneficent in its single form. Yet, in its plural form, it is considered to mean the redeemer. The Khorda Avesta describes this savior as such:

Whose name will be the victorious SAOSHYANT and whose name will be Astvat-ereta. He will be SAOSHYANT (the Beneficent One) because he will benefit the whole bodily world; he will be ASTVAT-ERETA (he who makes the bodily creatures rise up), because as a bodily creature and as a living creature he will stand against the destruction of the bodily creatures, to withstand the Druj of the two-footed brood, to withstand the evil done by the faithful. [4]
Accordingly, the Soashyant will rise at the end-time and fight against the vices in the world and spread justice and goodness far and wide. 

Maitreya: The Future Buddha

In some of the Buddhist references, such as the Amitabha Sutra and the Lotus Sutra, we read about the future Buddha of this world, called Maitreya, who will be a successor to the present Buddha. In Sanskrit, Maitreya means kindness and love. According to Buddhist religious texts, Maitreya will be the fifth and last Buddha who will appear on the earth. The arrival of Maitreya is expected at a time in the future when the dharma will have been forgotten by most on the earth. That is when Maitreya will appear on the earth to achieve complete enlightenment and to teach the pure dharma [5].

Li Hong: The Last Savior in Taoism

The Taoist last savior, called Li Hong, is depicted as an ideal leader who would reappear to set right heaven (tian) and earth (dì) at a time of upheaval and chaos. Li Hong will appear at the end of the world cycle to rescue the chosen people, who would be distinguished by certain talismans, practices, and virtues [6].

Savior in Abrahamic Religions

Moshiach: The Last Savior in Judaism

The Jews belief in the savior is manifested in the idea of the coming of Moshiach (i.e., Messiah). This person is believed to be a descendant of King David, who will "gather the Jews from all over the world and bring them back to the land of Israel" [7]. There are many verses in different scriptures and Talmudic [iii] literature which refer to this figure and enumerate his characteristics and manners [iv]. For instance, Isaiah says:

And there shall come forth a rod from the stock of Jesse [King David's father], and a branch shall grow from his roots; and the spirit of the Lord shall rest upon him, the spirit of wisdom and understanding, the spirit of counsel and might, the spirit of knowledge and of the fear of the Lord. And his delight shall be in fear of the Lord; and he shall not judge by what his eyes see, nor decide by what his ears hear. But with righteousness shall he judge the poor, and decide with equity for the humble of the earth; and he shall strike the earth with the rod of his mouth, and with the breath of his lips shall he slay the wicked.
–Isaiah 11:1-4

Those who follow Judaism believe that their savior has not been born yet. Therefore, they are eagerly awaiting the coming of the one who will save them and establish a just dominion in which "there will be world peace, no more wars nor famine, and, in general, a high standard of living" [7]. 

The Messiah: Jesus Christ (PBUH) the Savior of Mankind 

Christians believe that Jesus Christ (PBUH) is himself the savior of humankind, and he was born for this purpose. The name Christ literally means "the anointed one" or the Messiah [8]. As the Gospel of Matthew says, Jesus Christ (PBUH) has been sent to "Save his people from their sins" (1:20-21). It is also believed that Jesus Christ (PBUH) had been crucified to atone the sins of humanity and lead them toward salvation. According to Christian sources, Jesus Christ (PBUH) was the savior who was awaited by the Jews as whose coming was predicted in the Torah as the Moshiach. 

Another point which makes Jesus Christ (PBUH) the awaited savior in Christianity is the idea of his second coming or the Second Advent in the end-time to whose "day or hour no one knows, not even the angels in heaven, nor the Son, but only the Father" (Mark 13:32). This is the belief in "the future return of Christ in glory when it is understood that he will set up his kingdom, judge his enemies, and reward the faithful, living and dead" [9]. Different gospels, including Matthew chapters 24–25; Mark, chapter 13; Luke, chapter 21:5–26, and John, chapter 14:25–29, are mentioned as the evidence for this belief. Moreover, according to biblical verses, there will be many signs indicating the end-time among which the second coming of Jesus Christ (PBUH) and the last judgment. 

Therefore, like many other religions, Christians also believe in a savior or as they call it the Messiah, who will make this world a better place and free it from oppression and injustice. 

Imam Mahdi (AS): The Awaited Savior in Islam

In Islam, the belief in the savior is rooted in the fact that Allah never leaves His creatures, especially human beings, on their own and support them through sending His apostles to guide them toward the right path: "and there is a guide for every people" Quran (13:7). He had sent 124000 prophets (PBUT) first, followed by righteous leaders who continued the path of previously chosen messengers of Allah. As the Quran says, "Certainly We wrote in the Psalms, after the Torah: 'Indeed My righteous servants shall inherit the earth.'" (21:105).

 Therefore, the earth will never become empty of Allah's guide, and people will benefit from these guiding lights either directly or indirectly. Imam Mahdi (AS), the twelfth leader of Muslims and a descendant of Prophet Muhammad (PBUH&HP), who is leading a secret life at the time, will ultimately rise and spread peace and humanity throughout the earth. "The Holy Prophet (PBUH&HP) informed Muslims about his reappearance, telling his names, attributes, appellations, and peculiarities" [10]. The time of his coming is unknown, and it is followed by the preparation of particular circumstances. 

The signs that indicate his coming include "Widespread injustice and oppression, the advent of Dajjal (Anti-Christ) who would misguide the thinking of the people, the advent of Sufyani who is one of the pillars of mischief and corruption on the earth, the formation of the Islamic army, which would raise up black standards, the voice of the angel of the sky giving glad-tidings of his reappearance, the coming down on earth of Jesus Christ (PBUH) and his paying allegiance to and praying behind in congregation Prayers led by Imam Mahdi (AS)" [11]

This belief in the last savior, who would stand against tyranny and injustice and remind human beings of their real value, also, highlights Islam's optimism toward the future of the world.

Finally, we have reviewed the belief in the last savior or the person who will save humankind from the evilness and destruction in this world in different faiths and religions. On a more in-depth look, we can find many similarities between these beliefs. However, the Abrahamic religions had a more precise and more tangible attitude toward the idea of the last savior and the time of his coming. Therefore, the concept of the savior is one of the most essential and significant matters regarding the future of human destiny. 

Notes:
[i] Opposite to dharma, which includes unnaturalness, wrongness, evil, immorality, wickedness, and vice. 
[ii] The period when humanity will be governed by gods and every manifestation or work is close to the purest ideal, and humanity will allow intrinsic goodness to rule supreme.
[iii] The central text of Judaism and the primary source of the Jewish religion. 
[iv] Isaiah 2, 11, 42; 59:20, Jeremiah 23, 30, 33; 48:47; 49:39, Ezekiel 38:16, Hosea 3:4-3:5, Micah 4, Zephaniah 3:9, Zechariah 14:9, Daniel 10:14. 

References:

1. Samsara
2. the man on the white horse
3. The Vishnu Purana, trans. Horace Hayman Wilson, London: Trübner & co., Book IV, Chapter 24.
4. Khorda Avesta, Translated by James Darmesteter (From Sacred Books of the East, American Edition, 1898.), Part five
5. Buddhism
6. Anna K. Seidel. "Perfect Ruler in Early Taoist Messianism: Lao-tzu and Li Hung." History of Religions, Vol. 9, No. 2/3
7. The end of days
8. what does christ mean
9. second coming
10. Sayyid Ali al-Husayni al-Milani, The Promised Savior: An inquiry into the imamate of Imam Mahdi (as) from the viewpoint of Muslim thinkers, part 1, p.8. 
11. Baqir Shareef al-Qurashi, The Life of Imam al-Mahdi, Trans. Sayyid Athar Husayn S.H. Rizvi, p.259-283. Pdf.