From a human standpoint, he and his wife, Sarah, were past childbearing age when Jehovah promised them an heir. How did Abraham respond?
(‏ عبرانيين ١١ :‏ ١‏ )‏ فَٱلرَّجَاءُ لَيْسَ أَمْرًا ثَانَوِيًّا مُتَعَلِّقًا بِٱلْإِيمَانِ ،‏ بَلْ عُنْصُرٌ ضَرُورِيٌّ لَهُ .‏