Deuteronomy 24:1-2

1When a man hath taken a wife, and married her, and it shall come to pass that she findeth no favour in his eyes, because he hath found some uncleanness in her: then let him write her a bill of divorcement, and give it in her hand, and send her out of his house.12

2And when she hath departed from his house, she may go and be another man’s wife .