'Off' in the Bible

So Hanun took David's servants, and shaved off the one half of their beards, and cut off their garments in the middle, even to their buttocks, and sent them away.

And it came to pass at eventide, that David arose from off his bed, and walked upon the roof of the king's house: and from the roof he saw a woman bathing; and the woman was very beautiful to look upon.

And the shooters shot at thy servants from off the wall; and some of the king's servants are dead, and thy servant Uriah the Hittite is dead also.

And he took the crown of their king from off his head; and the weight thereof was a talent of gold, and in it were precious stones; and it was set on David's head. And he brought forth the spoil of the city, exceeding much.

Then said Abishai the son of Zeruiah unto the king, Why should this dead dog curse my lord the king? let me go over, I pray thee, and take off his head.