This time has not yet come. All creation is waiting for it though (Romans 8:19). The land, the plants, the animals and people are all waiting for the fullness of the Kingdom of God on earth to be revealed. Peace on earth doesn't just mean peace between people, but also peace between animals and people and peace between people and the earth. It means the reversal of the results of original sin (Genesis 3:14-19).
For reflection: How can I contribute to peace on earth today? At work? At home?
Let us pray. Jesus, there are people in my family who drive me crazy and I'll be seeing them soon. This year I would like things to be different. I would like to be an agent of peace in the family, instead of discord. How do I do that?