1 Samuel 18:17-19

Young's Literal Translation

¹⁷ And Saul saith unto David, `Lo, my elder daughter Merab -- her I give to thee for a wife; only, be to me for a son of valour, and fight the battles of Jehovah;' and Saul said, `Let not my hand be on him, but let the hand of the Philistines be upon him.'

¹⁸ And David saith unto Saul, `Who [am] I? and what my life -- the family of my father in Israel -- that I am son-in-law to the king?'

¹⁹ And it cometh to pass, at the time of the giving of Merab daughter of Saul to David, that she hath been given to Adriel the Meholathite for a wife.