So then if, while her husband lives, she is married to another man, she shall be called an adulteress: but if her husband dies, she is free from that law; so that she is no adulteress, though she is married to another man.
Read Chapter 7
For just as a woman is freed by the death of her husband from the law of her husband but not from the law of nature, so also they will be set free by the grace of God from the law by which they were held captive, so that it will be dead for them and they will not be adulterers by being joined to Christianity. For if the law lives in them they are adulterers and have no right to be called Christians, since they will be subject to punishment. Nor will he who is joined to the gospel after the death of the law and later returns to the law be an adulterer to the law but to the gospel. For when the law’s authority ceases, it is said to be dead. Commentary on Paul’s Epistles.