'Revoked' in the Bible

For the seller shall not return to that which is sold, even though he were yet alive amongst the living: for the vision is touching the whole multitude thereof; it shall not be revoked; and none shall through his iniquity assure his life.

Now, O king, establish the decree, and sign the writing, that it be not changed, according to the law of the Medes and Persians, which may not be revoked.

Then they came near, and spoke before the king concerning the king's decree: Hast thou not signed a decree, that every man that shall ask anything of any god or man within thirty days, except of thee, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which may not be revoked.