"Peace" is a very significant theme throughout Scripture - namely, the purchasing of our peace with God is THE theme of God's Scriptures! So there is this running picture of how God pursued us and gave his Son to die for us and purchase our reconciliation when we were yet ENEMIES of God (see Colossians 1:19-22 and Romans 5:10-11).
But this is not to say that God merely obliterated the punishment for our sins, as if to merely call a "cease fire" - rather God has, for as many as have received Christ, given us the right to be called CHILDREN of God!!