'Ought' in the Bible

Then Abimelech called Abraham, and said to him, "What have you done to us? How have I sinned against you, that you have brought on me and on my kingdom a great sin? You have done deeds to me that ought not to be done!"

The sons of Jacob came in from the field when they heard it. The men were grieved, and they were very angry, because he had done folly in Israel in lying with Jacob's daughter; a which thing ought not to be done.