From "A Celebration of Advent: Family Worship Guide"

Romans 5:1 NLT
Therefore, since we have been made right in God’s sight by faith, we have peace with God because of what Jesus Christ our Lord has done for us.

Peace is a word we hear often, but we don’t always stop to think about what it means. Sometimes looking at a word’s opposite is helpful. The opposites of peace are irritation, noise, conflict, hostility, and war. It’s easy for people to get irritated with each other. Noise can make it hard to feel peaceful. Fights between family members, friends, and strangers happen for many reasons. When fights occur between countries, it can lead to war. Our history contains accounts of many different wars. In every instance, both sides fight to win, but in the end, there is always one winner and one loser.

World War I began as a small conflict between two countries but soon grew into a huge war between two powerful groups of countries. It didn’t just affect the soldiers fighting in the war. People all over the world were affected by the absence of peace. Something unusual happened during all the terrible fighting. In some places along the battlefront, enemy soldiers called a truce. Without an official meeting to decide to take a break from fighting for a certain length of time, each side began to stop. On Christmas Eve, the shooting slowly ended as the soldiers started singing carols. Both sides could hear the music of the other from where they were taking cover, and then soldiers began coming out in the open, leaving their weapons behind to meet together in celebration of the holiday. War eventually resumed, but for that moment in time, peace was shared between enemies.

The Old Testament word for peace is shalom, and it means to complete or restore to wholeness. When things are broken and not at peace, we want them to return to the way they were. We want shalom. Human efforts to fix things like broken toys or ripped clothing might work for a while, but the evidence of the cracks and tears is still visible. One of the words we talk about during Advent is peace - the kind that restores things to wholeness the way they were meant to be without any sign of brokenness at all. The peace God gives through Jesus is not anything like the Christmas truce during World War I when the fighting stopped for a short time. The peace created by Jesus’ birth, death, and resurrection completely fixes our broken relationship with God - not just for a little while, but forever.