From the LCMS website, on the commemoration of Sarah, wife of Abraham:
Sarah was the wife (and half-sister) of the Hebrew patriarch Abraham (Gen. 11:29; 20:12). In obedience to divine command (Gen. 12:1), she made the long and arduous journey west, along with her husband and his relatives, from Ur of the Chaldees to Haran and then finally to the land of Canaan. She remained childless until old age. Then, in keeping with God’s long-standing promise, she gave birth to a son and heir of the covenant (Gen. 21: 1-3). She is remembered and honored as the wife of Abraham and the mother of Isaac, the second of the three patriarchs. She is also favorably noted for her hospitality to strangers (Gen. 18:1-8). Following her death at the age of 127, she was laid to rest in the Cave of Machpelah (Gen. 49:13), where her husband was later buried.