The sentiment engraved on thousands of Christmas cards expresses a wish for peace on earth. Most people identify it with the angel’s message announcing Christ’s birth to the shepherds. They declared, “Glory to God in the highest heaven, and on earth peace to those on whom his favor rests” (Luke 2:14). But we may be tempted, like the poet Henry Wadsworth Longfellow, to question whether God has delivered on this promise. In “I Heard the Bells on Christmas Day,” Longfellow observed: “For hate is strong,\ And mocks the song \ Of peace on earth, good-will to men!”

Jesus did not come to make sure everyone got along. “I have come to bring fire on the earth, and how I wish it were already kindled!” Jesus declared (v. 49). What is this fire? Many scholars see it as a reference to judgment. But in verse 50, Jesus also speaks of a “baptism” that must be completed (literally, “fulfilled”). The result will be a great separation between those who are aligned with Jesus and those who are not (vv. 52–53). Ultimately, He is speaking of the cross, which is a blessing to those who believe and a judgment against those who do not. Jesus calls for an allegiance that cuts across all ties (Matt. 10:37–39).

Christmas can be a difficult time for those whose family members do not share their faith in Jesus. These differences are often “the elephant in the room” that produces awkward conversation and misunderstanding. Your claim to know God through Christ may seem arrogant to others who do not understand the gospel. Some may even be afraid that you are involved in a cult! God often uses this separation to highlight His Son’s unique claims. It causes others to ask what Christians believe and why.