There's a number of verses in the New Testament which arguably instruct people not to swear. Colossians 3:8 is probably most on point, although as with all cros

There's a number of verses in the New Testament which arguably instruct people not to swear. Colossians 3:8 is probably most on point, although as with all cross-cultural comparisons of foul language, it's hard to know exactly what a Greek speaker 2000 years ago would have understood αἰσχρολογία to mean in the context of modern English.