i need help figuring out what the referance or meaning for eye for an eye
An eye for an eye. This means like for like, and in the dim and distant past I believe it started when it was common to put a person's eye out (literally out of the socket), and vengeance demanded that the doer be similarly done by. What used to be referred to as 'rough justice'.
This a quote from the Bible " An eye for an eye and a tooth for a tooth".
It's a way of saying that any wrong-doing should be paid for in kind - the punishment should fit the crime (exactly). A thief should have something taken from him - a fine or his liberty: a murderer should be executed and so on.