Then the eyes of both of them were opened, and they knew that they were naked; and they sewed fig leaves together and made themselves coverings. Genesis 3:7
Also for Adam and his wife the LORD God made tunics of skin, and clothed them. Genesis 3:21

God wrapped His law concerning not eating the forbidden fruit in a threat (Genesis 2:17) “In the day you EAT (disobey Me) you shall surely DIE.”

Genesis 3 is the record of Adam and Eve (and all mankind in them) breaking God’s command that prohibited eating the forbidden fruit. As a result of their trespass, some basic things changed:

From that point forward, women would experience pain in child bearing.
The man’s work (tending the garden) would now be difficult (thorns and sweat).
Mankind’s relationship with God was tainted by man’s rebellion against God’s rule.
Even though God graciously did not kill the man physically (though he did begin to die), all mankind entered into a state of spiritual death.

In Genesis 3:7 Adam and Eve knew they were naked, and they were ashamed. They tried to cover their own nakedness and shame (guilt). The problem is, their sin, guilt, and shame was not, and could not be hidden from the eyes of God by man’s efforts. This is a picture of man’s religion trying to cover his sin and make himself acceptable before the eyes of God. It didn’t work then. It never has, and it never will!

This did however lead to what God graciously did in 3:21 that points to Jesus. The LORD God made tunics of skin, and clothed them. Do not miss this! God made a covering for man’s sin.

Further, the covering was made of animal skin. That was a reminder that sin calls for death. The covering of animal skins provided by God symbolizes three facts:

BLOOD must be shed to cover one’s sins…
An innocent SUBSTITUTE can die in place of the guilty—and…
GOD must do it!

These are beautiful prophetic pictures of Jesus and His blood sacrifice that would cover the sins of those He came to save. Hallelujah!