Consider the difference between God and yourself. God is holy and does no sin. Consider what havoc sin has wrought in your own life. If God will only work with the sinless, then we are without hope. If we are in Christ, God has caused the punishment for our sin to fall on Christ, but grace that causes us to become passive is not God's grace.
Grace leads to obedience.
God wanted a separation, but He did not want a divorce. God intends to bring His justice to His people. That's just like God. Indeed the description would be fantastic of any other person but Jesus Christ, who is the eternal Son of God, born in the flesh of a virgin in Bethlehem. Jesus Christ alone will procure and protect this peace.