And being fully persuaded that, what he had promised, he was able also to perform.
Berean Study Bible (BSB) - Romans 4:21 >being fully persuaded that God was able to do what He had promised.
Textus Receptus (TR) - Romans 4:21 >καὶ πληροφορηθεὶς ὅτι ὃ ἐπήγγελται, δυνατός ἐστι καὶ ποιῆσαι.