Genesis 24:3-4

3. That thou shalt not take a wife. The kind of discipline which prevailed in Abraham’s house is here apparent. Although this man was but a servant, yet, because he was put in authority by the master of the family, his servile condition did not prevent him from being next in authority to his lord; so that Isaac himself, the heir and successor of Abraham, submitted to his direction. To such an extent did the authority of Abraham and reverence for him prevail, that when he substituted a servant in his place, he caused this servant, by his mere will or word, to exercise a power which other masters of families find it difficult to retain for themselves. The modesty also of Isaac, who suffered himself to be governed by a servant, is obvious; for it would have been in vain for Abraham to enter into engagements with his servant, had he not been persuaded that his son would prove submissive and tractable. It here appears what great veneration he cherished towards his father; because Abraham, relying on Isaac’s obedience, confidently calls his servant to him. Now this example should be taken by us as a common rule, to show that it is not lawful for the children of a family to contract marriage, except with the consent of parents; and certainly natural equity dictates that, in a matter of such importance, children should depend upon the will of their parents. How detestable, therefore, is the barbarity of the Pope, who has dared to burst this sacred bond asunder! Wherefore the wantonness of youths is to be restrained, that they may not rashly contract nuptials without consulting their fathers.