Romans 4:19–21

19 And not being weak in faith, whe did not consider his own body, already dead (since he was about a hundred years old), xand the deadness of Sarah’s womb. 20 He did not waver at the promise of God through unbelief, but was strengthened in faith, giving glory to God, 21 and being fully convinced that what He had promised yHe was also able to perform.