The Apostle Paul
Romans 7:2ESV·traditional attribution

For a married woman is bound by law to her husband while he lives, but if her husband dies she is released from the law of marriage.

John Calvin Reformed @genevareformer

2. For a woman subject to a man, etc. He brings a similitude, by which he proves, that we are so loosed from the law, that it does not any longer, properly and by its own right, retain over us any authority: and though he could have proved this by other reasons, yet as the example of marriage was very suitable to illustrate the subject...

Matthew Henry Presbyterian @wholebiblehenry

Among other arguments used in the foregoing chapter to persuade us against sin, and to holiness, this was one (Rom 7:14), that we are not under the law; and this argument is here further insisted upon and explained (Rom 7:6): We are delivered from the law. What is meant by this?

Commenting on Romans 7:1-6

John Gill Reformed Baptist @doctorgill

For the woman which hath an husband,.... The former general rule is here illustrated by a particular instance and example in the law of marriage; a woman that is married to a man, is bound by the law to her husband; to live with him, in subjection and obedience to him, so long as he liveth; except in the cases of adultery, Mat 19:9, and...