Is it ensure, insure, or assure?
fem. proper name, Biblical wife of Abraham and mother of Isaac, from Hebrew, literally "princess," from sarah, fem. of sar "prince," from sarar "he ruled," related to Akkad. sharratu "queen." Popular as a name for girls born in U.S. in 1870s and 1978-2000.
princess, the wife and at the same time the half-sister of Abraham (Gen. 11:29; 20:12). This name was given to her at the time that it was announced to Abraham that she should be the mother of the promised child. Her story is from her marriage identified with that of the patriarch till the time of her death. Her death, at the age of one hundred and twenty-seven years (the only instance in Scripture where the age of a woman is recorded), was the occasion of Abraham's purchasing the cave of Machpelah as a family burying-place. In the allegory of Gal. 4:22-31 she is the type of the "Jerusalem which is above." She is also mentioned as Sara in Heb. 11:11 among the Old Testament worthies, who "all died in faith." (See ABRAHAM.)