What does the Bible say about compromise in the church?

In Revelation 2, Christ addresses the church at Pergamos, highlighting the dangers of compromise represented by the doctrine of Balaam. Balaam's desire to please the king Balak led to the Israelites participating in idol worship, showing that compromise for the sake of harmony is sinful. The Apostle Paul urges believers not to remove the offense of the cross or yield to false teachings. Compromise can dilute the truth of the gospel and lead believers astray from the centrality of Christ and the purity of His message.