Parallel
Romans 4:21
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
καὶ πληροφορηθεὶς ὅτι ὃ ἐπήγγελται, δυνατός ἐστιν καὶ ποιῆσαι.
being fully persuaded that God was able to do what He had promised.