Whether to swear is to call God to witness?

❌ Objection 1 : It would seem that to swear is not to call God to witness. Whoever invokes the authority of Holy Writ calls God to witness, since it is His word that Holy Writ contains. Therefore, if to swear is to call God to witness, whoever invoked the authority of Holy Writ would swear. But this is false Therefore the antecedent is false also.

❌ Objection 2 : Further, one does not pay anything to a person by calling him to witness. But he who swears by God pays something to Him for it is written (Mt. 5:33): "Thou shall pay [Douay: 'perform'] thy oaths to the Lord"; and Augustine says [*Serm. clxxx] that to swear [jurare] is "to pay the right [jus reddere] of truth to God." Therefore to swear is not to call God to witness.

❌ Objection 3 : Further, the duties of a judge differ from the duties of a witness, as shown above (Questions [67],70). Now sometimes a man, by swearing, implores the Divine judgment, according to Ps. 7:5, "If I have rendered to them that repaid me evils, let me deservedly fall empty before my enemies." Therefore to swear is not to call God to witness.