And, without becoming weak in his faith, he attentively considered his own body, already deadened - he being a hundred years old, the deadening also of Sarah's womb;

For, of promise, is this word - According to this season, will I come, and Sarah shall have a son.

For it is written in the law about Abraham's two sons [Gen. 16]; one [was] by his slave woman [Hagar] and the other by the free woman, [his wife, Sarah].

This set of circumstances contains an illustration; for these two women [Hagar and Sarah] represent the two Agreements [between God and mankind]. The one [Agreement], given at Mount Sinai, represents Hagar, whose children became [the Israelites], enslaved under bondage [to the requirements of the law of Moses].

Therefore, brothers, we [Christians] are not the [spiritual] children of the slave woman [Hagar] but of the free woman [Sarah].

By faith even Sarah herself received power to conceive seed when she was past age, since she counted him faithful who had promised:

For so also formerly the holy women, who hoped in God, adorned themselves, being submissive to their husbands; as Sarah obeyed Abraham, calling him her lord:

as Sarah obeyed Abraham, calling him lord: whose children ye now are, if ye do well, and are not put in fear by any terror.