1 Timothy 1:10

10. Perjured Who either break a sworn engagement, or swear to a falsehood in point of fact.

Any other Stopping with the ninth commandment, the apostle generalizes against all that contradicts sound doctrine. Sound is literally healthful in opposition to diseased. So sound doctrine, 2 Timothy 4:3; and Titus 2:1. This is one of the phrases peculiar to the pastoral epistles. This arises from the fact that in Paul’s most truthful view the Jewish fables and genealogies and heresies, which were invading the Church, were mental imbecilities, arising from and resulting in a sickly state of mind. And against these brain diseases the healthful doctrine, the faithful saying, of the gospel were the corrective.