Are pledges, covenants, vows or oaths in court Christian? God confirmed His promises by an oath (Hebrews 6:16-18), Jesus answered a question stated as an oath (Matthew 26:63-64), and Paul called upon God as his witness that he was telling the truth (2 Corinthians 1:23) and not a lie (Galatians 1:20). In the Sermon on the Mount, Jesus did not say “swear not at all” period. He preached against swearing an oath too lightly. People do not take oaths seriously. Jesus did not condemn sincere oaths, but frivolous and deceptive ones. Rather than making oaths to cover up perjury or insincerity, simply answer yes or no.