2 Samuel 3:12-13

12And Abner sent messengers to David on his behalf, saying, Whose is the land? saying [also], Make thy covenant with me, and behold, my hand shall be with thee, to turn all Israel to thee.

13And he said, Well, I will make a covenant with thee; only I require one thing of thee, that is, Thou shalt not see my face, except thou first bring Michal Saul's daughter, when thou comest to see my face.