'Hard' in the Bible

And I have delivered the Egyptians Into the hand of a hard lord, And a strong king doth rule over them, An affirmation of the Lord, Jehovah of Hosts.

A hard vision hath been declared to me, The treacherous dealer is dealing treacherously, And the destroyer is destroying. Go up, O Elam, besiege, O Media, All its sighing I have caused to cease.