Parallel
Romans 4:21
Patriarchal Greek New Testament (1904) · Berean Standard Bible
καὶ πληροφορηθεὶς ὅτι ὃ ἐπήγγελται δυνατός ἐστι καὶ ποιῆσαι.
being fully persuaded that God was able to do what He had promised.