'As I Live' in the Bible

What shall I say? The Lord hath made a promise to me. Yea, and he himself hath performed it. I shall therefore, as long as I live, remember bitterness of my life.

Lift up thine eyes round about, and behold: all these gather themselves together, and come to thee. As I live, saith Jehovah, thou shalt surely clothe thee with them all as with an ornament, and gird thyself with them, like a bride.