In the thick foliage, they hoped to conceal themselves, because they felt so guilty and corrupted through the fall. Such is the nature of conscience that it cannot be deceived by either self-justification, or denial of sin, or any attempt on our part to hide it.
How can man have fellowship with God now when the mere sound of God’s voice causes him to shrink from his presence? Guilt is universal, and the same shame which our first parents felt is in all of us. We know ourselves to be cut off from God. When men draw near to a god of their own making, it is an act of self-deception. The gods that human beings invent for themselves are nothing like the true God who searches all things with his holy eyes and from whom nothing can be hidden. It is too painful for man to approach such a holy God, and therefore he manufactures gods for himself which lack this holiness.
Adam and Eve hid among the trees, and so all human beings are forced to hide in a place where they would rather not be, in order to try to get away from God’s presence. Our consciences drive us into all manner of inconveniences and complicated subterfuges in order to avoid the Lord.