Jesus taught about fulfilling the law in the Sermon on the Mount. In Matthew 5:17-48, Jesus discusses the law in depth. He says the law is still valid and important. Jesus explains that the law's principles go deeper than just outward actions - they involve inward attitudes and intentions as well. Anger and lustful thoughts can be equivalent to murder and adultery. Jesus calls his followers to a higher standard of obedience to the law through loving even enemies and turning the other cheek when harmed.