'Certainly' in the Bible

And David asketh of Jehovah, saying, 'Do I go up unto the Philistines? dost Thou give them into my hand?' And Jehovah saith unto David, 'Go up, for I certainly give the Philistines into thy hand.'

And David saith to him, 'Be not afraid; for I certainly do with thee kindness because of Jonathan thy father, and have given back to thee all the field of Saul thy father, and thou dost eat bread at my table continually.'

for a vow hath thy servant vowed in my dwelling in Geshur, in Aram, saying, If Jehovah doth certainly bring me back to Jerusalem, then I have served Jehovah.'

and now, send hastily, and declare to David, saying, Lodge not to-night in the plains of the wilderness, and also, certainly pass over, lest there be a swallowing up of the king and of all the people who are with him.'

and David sendeth the third of the people by the hand of Joab, and the third by the hand of Abishai, son of Zeruiah, brother of Joab, and the third by the hand of Ittai the Gittite, and the king saith unto the people, 'I certainly go out -- I also -- with you.'