There are many lesser rules and human traditions which divide the Christian Church but one great and wonderful rule which unites us all. It was outlined by Jesus in Matthew 22:34-46. The Bible contains many excellent summaries of right religion. Act justly, love mercy and walk humbly with God (Micah 6:8). Do what is just and right (Isaiah 56:1). Seek God and live (Amos 5:4). Live by faithfulness (Habakkuk 2:4). They are articles of faith. Jesus chose a couple of other Old Testament statements to summarize the faith. One was from Deuteronomy (6:5) about loving God and the other was from Leviticus (19:18) about loving our neighbor. These commandments were not even specifically from the Ten Commandments, though they are there in principle. They unite all of Christianity under one statement of belief.