Whether an oath added to the consent that is expressed in words of the future tense makes a marriage?

Objections

Objection 1 : It would seem that if an oath be added to a consent that is expressed in words of the future tense it makes a marriage. For no one can bind himself to act against the Divine Law. But the fulfilling of an oath is of Divine law according to Mt. 5:33, "Thou shalt perform thy oaths to the Lord." Consequently no subsequent obligation can relieve a man of the obligation to keep an oath previously taken. If, therefore, after consenting to marry a woman by words expressive of the future and confirming that consent with an oath, a man binds himself to another woman by words expressive of the present, it would seem that none the less he is bound to keep his former oath. But this would not be the case unless that oath made the marriage complete. Therefore an oath affixed to a consent expressed in words of the future tense makes a marriage.
Objection 2 : Further, Divine truth is stronger than human truth. Now an oath confirms a thing with the Divine truth. Since then words expressive of consent in the present in which there is mere human truth complete a marriage, it would seem that much more is this the case with words of the future confirmed by an oath.
Objection 3 : Further, according to the Apostle (Heb. 6:16), "An oath for confirmation is the end of all . . . controversy"; wherefore in a court of justice at any rate one must stand by an oath rather than by a mere affirmation. Therefore if a man consent to marry a woman by a simple affirmation expressed in words of the present, after having consented to marry another in words of the future confirmed by oath, it would seem that in the judgment of the Church he should be compelled to take the first and not the second as his wife.
Objection 4 : Further, the simple uttering of words relating to the future makes a betrothal. But the addition of an oath must have some effect. Therefore it makes something more than a betrothal. Now beyond a betrothal there is nothing but marriage. Therefore it makes a marriage.