Salmi 42:9 Cabala: Zohar

"Those who hope for His mercy." Who are "those who hope for His mercy?" They are the ones who study the Torah at night and join the Shechinah. When morning comes, they hope for His mercy. It has already been explained that when a man studies the Torah at night, a thread of grace is drawn upon him during the day, as it is written, "Yet Hashem will command His grace in the daytime, and in the night His song shall be with me" (Tehilim 42:9). Why is it said that "Hashem will command His grace in the daytime?" Because "in the night His song shall be with me." Hence the verse, "Hashem takes pleasure (in) those who fear Him," uses the particle Et instead of "in," as one who pleases another and wishes to be at peace with him. It is therefore written, "Hashem takes pleasure (in) those who fear him", rather than "Hashem takes pleasure in those who fear Him,"

"the pillar of cloud traveled from in front of them" (Exodus 14:19) - who is this pillar of cloud? Rabbi Yosey said: this is the cloud that is always seen with the Shechina. And this is the cloud to which Moshe went into (see Ex. 19:9 and Ex. 20:18). Rabbi Abba said: it is written "and Ad-nai walks in front of them during the day" (Ex. 13:21) - rather (the cloud) is the help of the righteous (yesod), and expands the righteous's mark, and that is why this cloud goes during the day, and it is written (Ps. 42:9) "during the day Ad-nai orders His lovingkindness (chesed)." And this cloud is from the side of chesed, and a different cloud goes at night, and it is called 'pillar of fire'.

Rabbi Yesa said, He even delights himself with those of this world. How can that be? He replied, Because at midnight, all the truly righteous people awaken to study Torah and recite all the praises of Torah. And we have learned that the Holy One, blessed be He, together with all the righteous who are in the Garden of Eden, all listen attentively to their voices. And, during the day, a thread of grace is woven around them. As it is written, "Yet Hashem will command his loving kindness in the daytime, and in the night, His song shall be with me..." (Ps. 42:9).