'Certainly' in the Bible

And David inquired of Jehovah, saying, Shall I go up against the Philistines? wilt thou give them into my hand? And Jehovah said to David, Go up; for I will certainly give the Philistines into thy hand.

And David said to him, Fear not; for I will certainly shew thee kindness for Jonathan thy father's sake, and will restore thee all the land of Saul thy father; and thou shalt eat bread at my table continually.

Howbeit, because by this deed thou hast given great occasion to the enemies of Jehovah to blaspheme, even the child that is born to thee shall certainly die.