Midrash su Salmi 90:8

(Leading) to the way of evil, there are four doors, and at each door seven angels are standing—four without, and three within. The (angels) without are merciful, and those within are cruel. When a man comes to enter, the merciful angels go to meet him and say to him: What hast thou to do with the fire yonder? What hast thou to do with those glowing coals? Listen to us and repent. If he hearken to them and repent, behold it is well, and if not, he says to them: Amongst them (yonder) let my life (be). || They say to him: Thou hast entered the first door; do not enter the second door. When he comes to enter the second door, the merciful angels go to meet him and say to him: What benefit is it to thee to be erased from the Torah of thy God? Would it not be better to be inscribed in the Torah of thy God? Hearken unto us and repent. If he listen to them and repent, it is well; and if not, he says to them: With them yonder let my life (be). They say to him: Behold thou hast entered the second door, do not enter the third door. When he is about to enter the third door the merciful angels go to meet him and say to him: What benefit is to thee that they (i.e. the good angels) should flee from thee and call thee "Unclean"? Would it not be better that they should call thee "Pure One" and not "Unclean"? Hearken to us and repent. If he hearken unto them, behold, it is well; and if not, he says unto them: With them (yonder) let my life (be). They say to him: Behold thou hast entered the third door; do not enter the fourth door! When he is about to enter the fourth door the merciful angels go to meet him and say to him: Behold, thou hast entered these doors, and thou hast not hearkened nor returned. Thus far the Holy One, blessed be He, receives || the penitent; thus far the Holy One, blessed be He, pardons and forgives, and every day He says: Return, ye children of man, as it is said: "Thou turnest man to contrition" (Ps. 90:8).

THE POWER OF REPENTANCE
REPENTANCE and good deeds are a shield against punishment. Rabbi Ishmael said: If repentance had not been created, the world would not stand. But since repentance has been created, the right hand of the Holy One, blessed be He, is stretched forth to receive the penitent every day, and He says, Repent, ye children of men. "Repent, ye children of men" (Ps. 90:8). Know thou the power of repentance. Come and see from Ahab, king of Israel, for he had robbed, coveted, and murdered, as it is said, "Hast thou killed, and also taken possession?" (1 Kings 21:19). He sent and called for Jehoshaphat, king of Judah, who gave him thrice daily forty stripes, and in fasting and with prayer he rose up early and retired late, before the Holy One, blessed be He, and he did not return any more to his evil deeds. His repentance was accepted, as it is said, || "Seest thou how Ahab humbleth himself before me? Because he humbleth himself before me, I will not bring the evil in his days" (1 Kings 21:29).