What does the Bible say about the way back to the Garden of Eden?

Genesis 3 reveals that after Adam and Eve sinned, they were barred from re-entering the Garden of Eden. The Lord placed cherubim and a flaming sword to guard the way to the tree of life, signifying that there is no way back to the unblemished fellowship with God found in the garden. This imagery illustrates the profound consequence of sin: a complete and unalterable separation from God's presence and grace. Thus, the symbolism of the flaming sword underscores that humanity, due to Adam's transgression, is alienated from eternal life as represented by the tree of life.