'Adjure' in the Bible

And the king sent and called for Shimei, and said unto him, Did I not adjure thee by Jehovah, and protest unto thee, saying, Know for certain, that on the day thou goest out, and walkest abroad any whither, thou shalt surely die? and thou saidst unto me, The saying that I have heard is good.

And the king said unto him, How many times shall I adjure thee that thou speak unto me nothing but the truth in the name of Jehovah?