Leviticus

And if a man shall take his brother’s wife, it is an unclean thing: he hath uncovered his brother’s nakedness; they shall be childless.

For John said unto him, It is not lawful for thee to have her.

For John had said unto Herod, It is not lawful for thee to have thy brother’s wife.

If brethren dwell together, and one of them die, and have no child, the wife of the dead shall not marry without unto a stranger: her husband’s brother shall go in unto her, and take her to him to wife, and perform the duty of an husband’s brother unto her.

Saying, Master, Moses said, If a man die, having no children, his brother shall marry his wife, and raise up seed unto his brother.