The New Testament sheds light on two types of peace: peace with God and the peace of God. Peace with God is “through” the Lord Jesus Christ (Romans 5:1; Colossians 1:20). According to today's passage, this “peace with God” is experienced only upon one’s justification at the moment of salvation. Trusting Christ's payment through His death, burial, and resurrection remains the only basis for grasping this peace. Before a man trusts in Christ, he is God's enemy (Romans 5:10), but after salvation, he has been gloriously reconciled to God through the work of God's Son. No man earns this peace and no man can lose this peace to again become God's enemy because this peace is an everlasting peace.
According to the Bible, before a man trusts Christ as Saviour, he remains the enemy of God (Romans 5:10; Colossians 1:21). But God, in His great mercy, saves His enemies as they individually choose to trust in Christ’s payment for their sins. Though a Christian has the indwelling Spirit, he never fully comprehends all that the Lord has done for him through salvation. This is why the Bible says that God’s love passes all knowledge (Ephesians 3:19). However, the more a man draws nigh to God, the more he learns about the kindness God has shown him through Jesus Christ. No matter how we learn in this life, eternity will continue to reveal to the saints the depths of the kindness of God. No wonder the greatness and marvellous nature of His love is truly beyond comprehension.