Romans 7:1-3

Brothers and sisters, all of you understand the law of Moses. So surely you know that the law rules over people only while they are alive. For example, a woman must stay married to her husband as long as he is alive. But if her husband dies, she is free from the law of marriage. But if she marries another man while her husband is still alive, the law says she is guilty of adultery. But if her husband dies, she is free from the law of marriage. Then if she marries another man, she is not guilty of adultery.