Matthews 5:38 " Ye have heard that it hath been said, AN EYE FOR AN EYE, AND A TOOTH FOR A TOOTH:"
5:39 " But I say unto you, That ye not resist evil: but whosoever shall smite thee on thy right cheek, turn to him the other also."


I think that this makes it clear that was said in the old is not of relevance for the new says different. I think this shows that God's plan has changed. That this shows his merciful side.

Matthews 5:47 "And if ye salute your brethren only, what do ye more than others? do not even the publicans so?"