This is the law in cases where a man is jealous and becomes suspicious that his wife has committed adultery. The woman shall be made to stand in front of the altar, and the priest shall perform this ritual.
So then, if she lives with another man while her husband is alive, she will be called an adulteress; but if her husband dies, she is legally a free woman and does not commit adultery if she marries another man.
Marriage is to be honored by all, and husbands and wives must be faithful to each other. God will judge those who are immoral and those who commit adultery.
In addition, Ruth the Moabite, Mahlon's widow, becomes my wife. This will keep the property in the dead man's family, and his family line will continue among his people and in his hometown. You are witnesses to this today.”