XXXIX. Of a Christian man’s Oath
AS we confess that vain and rash swearing is forbidden Christian men by our Lord Jesus Christ, so we judge that Christian religion doth not prohibit but that a man may swear when the magistrate requireth in a cause of faith and charity, so it be done according to the Prophet’s teaching in justice, judgement, and truth.
The current cultural context has shifted the meaning of this article quite a bit. What do you think they meant when they wrote this?