Genesis 8:7

He sent forth a raven; a fit messenger for that purpose, because it smells dead carcasses at a great distance, and flies far, and then returneth to its former habitation with something in its bill. To and fro; Heb. going and returning; i.e. went forth hither and thither; now forward, then backward; sometimes going from the ark, and sometimes returning to the ark, though never entering into it again. Not as if she returned afterwards; the phrase implies that she never returned. And so the word until is often used, as 2 Samuel 6:23, Michal had no child until the day of her death, i.e. never had a child. See also Psalms 110:1 Matthew 1:25.