Peace With God
Luke 2:14, "Glory to God in the highest, and on earth peace, good will toward men."
In another instance, Jesus said He did not come to send peace on the earth, but a sword. Then He prophesied that those who received Him would experience persecution, even from their own family (Matthew 10:34-36). How do these verses fit together?
The peace the angels were singing about was not a peace between men; they were rejoicing that there would be peace between God and man. When Jesus prophesied division and war in Matthew 10, he was speaking of relationships between men.
Through the Old Testament law, God began to release His wrath on man's sin (Romans 4:15). It wasn't the wrath of Satan that Jesus suffered on the cross.
He suffered the wrath of His Father (Isaiah 53:10-12; 2 Corinthians 5:21). The Father placed His punishment for our sins on Jesus. This ended the war between God and man. This is the peace that the angels were proclaiming.
As a result of men receiving this peace from God there have also been many cases of reconciliation between men, but that is an effect; not the actual peace that was spoken of. These effects are secondary.
Today, through Jesus, we now have peace with God (Romans 5:1). God is not mad at us. He isn't even upset. We have been accepted through Jesus (Ephesians 1:6).
Believe the good news that through Jesus, the war between God and us is over.