Midrash su Salmi 139:7

Thereupon Cain cried out: “O Lord of the universe, do You have informers who denounce men to You? My father and mother are the only living human beings on earth, and they do not know that I slew him; how do You, who abidest in heaven, know?” The Holy One, blessed be He, answered: “Fool! I bear the entire world as it is said: I have made and I will bear; yea, I will carry and will deliver (Isa. 46:4).” Forthwith, Cain cried out: “You bear the entire world, yet my sin You are unable to bear. My sin is greater than I can bear (Gen. 4:13).” “Since you have confessed and repented,” said the Holy One, blessed be He, “go into exile from this place.” Thus it is said: And Cain went out from the presence of the Lord and dwelled in the land of Nod (ibid., v. 16). Wherever he wandered, the earth would quake beneath his feet; the animals and the beasts would tremble in fright, and would inquire of each other: “What is this?” And they would whisper: “He is Cain, who murdered his brother, Abel. The Holy One, blessed be He, has decreed concerning him: A fugitive and a wanderer you shall be.” Then they would say to each other: “Let us devour him.” They would gather together to attack, but as they approached, tears would well up in his eyes and he would cry out: Whither shall I go from Thy spirit, or whither shall I flee from Thy presence? If I ascend up into heaven, Thou art there; if I make my bed in the netherworld, behold, Thou art there. If I take the wings of morning and dwell in the uttermost part of the sea, even there would Thy hand lead me and Thy right hand hold me (Ps. 139:7–10).

Once in the Garden of Eden; whence do we know? Because it is said, "And they heard the voice of the Lord God walking in the garden in the cool of the day" (Gen. 3:8). And it is written, "My beloved is gone down to his garden, to the beds of spices" (Cant. 6:2). (God) sat in judgment, and He judged with judgment. He said to him (Adam): Why didst thou flee before Me? He answered Him: I heard Thy voice and my bones trembled, as it is said, "I heard thy voice in the garden, and I was afraid, || because I was naked: and I hid myself" (Gen. 3:10).