Jesus and the Father glorified each other when Jesus died and rose for us. Now His is the glory. When we die we shall be glorified. When man fell into sin there was no peace between man and God and no peace among men. Sinful man is dead in his sins but he is worse than dead because he is at war with God and with man.
Man causes wars and rumors of wars.
Awful things will happen. There is peace on earth. This is not a state or a condition. Of course, God wills peace for the whole creation. But when you have the peace of God you may have strife with your relatives who are not Christians.