Widows who married
Ro 7:1 ... by law a married woman is bound to her husband as long as he is alive, but if her husband dies, she is released from the law that binds her to him.
Where does this law come from? We do not accept a doctrine from a single verse. See Rule - Rigorous . If someone chooses to argue a doctrine, it must be done within the rules or it is mixing Greek rhetoric with Hebrew hermeneutics.
There are at least four women who were set free to remarry after the death of their husbands. This is a prophetic pattern.
Israel was the 'bride' in the OT, and God divorced her. Christ remarried her. He said he came for his own; Israel. Then his death broke the marriage. Jesus confronted the Pharisees saying that being a child of Abraham had no value. Paul reiterated this.