'Certificate' in the Bible

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.

They asked him, "Why, then, did Moses order us "to give a certificate of divorce and divorce her'?"

They said, "Moses allowed a man to write a certificate of divorce and to divorce her."