Cross-references Explore similar Bible verses on Romans 4:21 in English Standard Version "fully convinced that God was able to do what he had promised." Ge 18:14 Is anything too hard for the Lord? At the appointed time I will return to you, about this time next year, and Sarah shall have a son.” Heb 11:19 He considered that God was able even to raise him from the dead, from which, figuratively speaking, he did receive him back.