Musar su Salmi 140:14

Our forebears used to pray: “May it be the will of Hashem our God and God of our fathers that we be prevented from sinning so that we will neither be ashamed nor disgraced before our ancestors.” Such shame makes it impossible for a person to enter the King’s presence, for his soul is naked without any raiment. Thus the Zohar relates (ibid. 226b): Come and see. Woe to those who see but do not understand, nor do they realize upon what the world stands … For out of every commandment that a person fulfills, a garment of honor is fashioned for him to wear in the World to Come and he will be in need of them all. Furthermore, each day that he performed good deeds, garments are also fashioned. Rabbi Yehudah the Elder became anxious one day (regarding his portion in the World to Come). He was shown in a dream a vision of his radiance, which shone to the four directions. “What is this?” he inquired. “This is the garment you will wear when you come to reside in this world,” came the reply. From that day on he was joyful. Rabbi Yehudah said: Every day the spirits of the righteous sit by rows in Gan Eden dressed in their garments, praising the Holy One Blessed is He with highest honor. This is the meaning of the verse, “Surely the righteous will give thanks to Your Name; the upright will dwell in Your Presence” (Tehillim 140:14). This is the way of the righteous — to live in constant trembling and fear lest they be disgraced in the World to Come on account of their deeds in this world. All the good deeds that they do are in their eyes like a drop in the ocean against their wicked deeds.

This is what is meant by the verse, “Surely the righteous will acknowledge Your Name; the upright will dwell in Your Presence” (Tehillim 140:14). When will the righteous give thanks to Your Name? When the upright dwell in Your Presence. That is, when they sit before You in Gan Eden at midnight. Afterwards the three bands of ministering angels that are appointed over the watches of the night sing songs of praise until dawn. Then at dawn it is Israel’s duty to rise and with strength offer songs and praises before the King of the Universe. Why is this? Because they must take over serving after the ministering angels have finished. Moreover, at that time the Holy One Blessed is He is found nearer to earth. This is the meaning of the verse, “And those who seek Me will find Me” (Mishlei 8:17). (The word for “those who seek Me” — meshacharai — contains the word for “dawn” — shachar.) Rabbi Yehudah added: Provided that they do not leave off until it is time to pray as the sun rises.