The Apostle Paul
1 Corinthians 7:37ESV·traditional attribution

But whoever is firmly established in his heart, being under no necessity but having his desire under control, and has determined this in his heart, to keep her as his betrothed, he will do well.

John Calvin Reformed @genevareformer

37. But he who standeth firm in his heart. Here we have the second part of the statement, in which he treats of young women who have the gift of abstaining from marriage. He commends therefore those fathers who make provision for their tranquillity; but let us observe what he requires.

Matthew Henry Presbyterian @wholebiblehenry

In this passage the apostle is commonly supposed to give advice about the disposal of children in marriage, upon the principle of his former determination. In this view the general meaning is plain. It was in that age, and those parts of the world, and especially among the Jews, reckoned a disgrace for a woman to remain unmarried past a certain number of years: it...

Commenting on 1 Corinthians 7:36-38

John Gill Reformed Baptist @doctorgill

Nevertheless, he that standeth steadfast in his heart,.... The apostle returns to confirm his former advice, where it can be attended to with safety; and observes, that notwithstanding what he had allowed might lawfully be done, and was proper to be done; yet a man that had deliberated upon, and had well weighed the matter of virginity, the case of a single life, and was...