Our Rabbis of Blessed Memory said…
The song of Torah only emerges at night, which is a propitious time for mourning the destruction of the Beit Hamidkdash by reciting Tikun Chatzot, pouring out one’s heart in prayer, and asking for forgiveness. A man can achieve a greater level of completeness at night than he can during the day, and in the holy books – in particular, in the holy Zohar –extensive praise is lavished on anyone who has the merit to arise at midnight. And in the Yerushalmi Talmud it is written: “If you see that people have abandoned the Torah, stand right up and fortify it and you shall receive a reward on behalf of all of them.” Therefore, since there are very few who study late at night, the significance of them “receiving reward on behalf of everyone” is multiplied dozens of times over, and the reward received by those who learn and by those who support them is limitless.
One of the most frequently discussed matters in the holy Zohar is the praiseworthiness of those who study the holy Torah at “midnight”. As King David, blessed be his memory, said, “At midnight, I rise to give thanks to You.” And in the holy books countless references are made to the praiseworthiness of studying at midnight, emphasizing that it is dozens of times more valuable than studying during the day. “There is no greater time of heavenly mercy than then, and it is the most desirable time to delve into the holy Torah.” (The Holy Alsheich, Eicha, chapter 2, verse 19). [see: Reishit Chochma (Sha’ar HaKedusha) where a pure soul gathered everything that our sages of blessed memory said, and wrote that anyone who reads their words will surely become inspired and will desire with all his soul to arise at midnight.] Thus, we provide you with a small collection of the many words written in the holy books, praising those who arise at midnight to 1
It is written in the holy Zohar (Vayikra 13): Regarding those who prepare to occupy themselves with Torah at midnight, all of their praise is accepted and desired before the King. And about them it is written: “Praise you servants of the Lord, who stand in the house of the Lord…” They are the ones who are called “servants of the Lord”, they are the ones who are worthy of blessing the King and whose blessing is a blessing. As it is written, “Lift your hands in the holy place and bless the Lord.” You, who merit the holy King being blessed by you, the blessing through you is a blessing.”
It is also written in the holy Zohar (ibid. 28): Rav Chezkiyahu said, anyone who occupies himself with Torah at that hour will certainly earn a permanent place in the Next World. They asked Rabbi Yossi, “What is the reason for that?” He said: I have learned that every midnight when the Holy One, blessed be He, awakes in Gan Eden, all the souls in Gan Eden will be offered to drink in abundance from that river called “Nahal Kedumim”, a river of delights with water that will flow for eternity. Moreover, for one who arises to study Torah, it will be as if that river washes over his head and waters him among the saplings in Gan Eden. Hence he will have a permanent place in the World to Come. Rabbi Yossi said: “Whereas all the righteous souls in Gan Eden listen to him, and allot him a portion of that river tonic, he, therefore, has a permanent place in the World to Come.”
It is also written in the holy Zohar: And when morning comes, the Holy One, blessed be He draws a thread of mercy over him, and the Holy One, blessed be he, gives him gifts, and happy is his lot.
And our teacher Rabbi Chaim Vital, ztz”l wrote (in Sha’arei Kedusha, part 2:7):
When a man wakes up after midnight, he is included among the mourners of Zion and Jerusalem, of whom it is said (Yeshayahu 66:10): “rejoice with her a rejoicing, all who mourn over her”. For at that moment the Holy One, blessed be He, also mourns, and roars like a lion. If he then also occupies himself with Torah, our rabbis of blessed memory said of him (Shir Hashirim Rabba, 5, 7): The song of Torah only emerges at night”. And our rabbis of blessed memory said, (Avodah Zara, page 3, column 2): “One who occupies himself with Torah at night has a thread of mercy spread over him during the day”. And our rabbis of blessed memory said (Tamid, page 32, column 2): “One who studies Torah at night, the Shechina faces him.” And it is written (Eicha 2, 19): Rise, awaken in the night”. David Hamelech, may he rest in peace, didn’t merit life in this world and in the next, if not for that. As it is written (Tehillim 119:62): “At midnight, I rise to give thanks to You for Your just judgments.” And throughout the entire book of Zohar, the praises for this mitzva appear countless times, and a man who learns at night is bestowed with Ruach Hakodesh, as it is stated in Zohar Shemot (18, 2).