[86] For an oath is the calling of God to give his testimony concerning the matters which are in doubt; and it is a most impious thing to invoke God to be witness to a lie.
Come now, if you please, and with your reason look into the mind of the man who is about to swear to a falsehood; and you will see that it is not tranquil, but full of disorder and confusion, accusing itself, and enduring all kinds of insolence and evil speaking;