Romans 4:18-19 AMP [18] In hope against hope Abraham believed that he would become a father of many nations, as he had been promised [by God]: “So [numberless] shall your descendants be.” [Gen 15:5] [19] Without becoming weak in faith he considered his own body, now as good as dead [for producing children] since he was about a hundred years old, and [he considered] the deadness of Sarah’s womb. [Gen 17:17; 18:11] https://bible.com/bible/1588/rom.4.18-19.AMP