Adam and Eve had fallen from their position of innocence by disobeying God’s command. This is sin. Whenever someone sins, there are consequences. Sometimes those consequences are immediate and sometimes they come later, but they always happen. Here is what God did.
And the LORD God said unto the serpent, Because thou hast done this, thou art cursed above all cattle, and above every beast of the field; upon thy belly shalt thou go, and dust shalt thou eat all the days of thy life: 15 And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel. 16 Unto the woman he said, I will greatly multiply thy sorrow and thy conception; in sorrow thou shalt bring forth children; and thy desire shall be to thy husband, and he shall rule over thee. 17 And unto Adam he said, Because thou hast hearkened unto the voice of thy wife, and hast eaten of the tree, of which I commanded thee, saying, Thou shalt not eat of it: cursed is the ground for thy sake; in sorrow shalt thou eat of it all the days of thy life; 18 Thorns also and thistles shall it bring forth to thee; and thou shalt eat the herb of the field; 19 In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou art, and unto dust shalt thou return. (Genesis 3:14-19)
First, the serpent is held accountable. There is some debate over whether God judged the physical animal Satan used or Satan himself. It appears to this writer that God judged them both. The physical serpent was cursed to crawl on his belly. (vs. 14) The apparent reason for this is that it was complicit somehow in Satan’s work. Satan in turn was condemned by the seed of the woman which would “bruise” his head. (vs. 15)