'Certificate of Divorce' in the Bible

“When a man takes a wife and marries her, and it happens that she finds no favor in his eyes because he has found some indecency in her, and he writes her a certificate of divorce and puts it in her hand and sends her out from his house,

and if the latter husband turns against her and writes her a certificate of divorce and puts it in her hand and sends her out of his house, or if the latter husband dies who took her to be his wife,

This is what the LORD says: "Where is your mother's certificate of divorce with which I sent her away? Or to which of my creditors did I sell you? Look! It's because of your sins that you were sold, and because of your transgressions that your mother was sent away.

I observed that it was because unfaithful Israel had committed adultery that I had sent her away and had given her a certificate of divorce. Nevertheless, her treacherous sister Judah was not afraid but also went and prostituted herself.

“It has also been said, ‘Whoever divorces his wife is to give her a certificate of divorce’;

The Pharisees said to Him, “Why then did Moses command us to give her a certificate of divorce and send her away?”

So they said, "Moses permitted [a man] to write a certificate of divorce and to send [her] away."