'Whereof' in the Bible

Now Elisha was fallen sick of his sickness whereof he died: and Joash the king of Israel came down unto him, and wept over him, and said, My father, my father, the chariots of Israel and the horsemen thereof!

and they served idols, whereof Jehovah had said unto them, Ye shall not do this thing.

And he built altars in the house of Jehovah, whereof Jehovah said, In Jerusalem will I put my name.