King James Version (KJV) - Romans 4:21 >

And being fully persuaded that, what he had promised, he was able also to perform.

Textus Receptus (TR) - Romans 4:21 >

καὶ πληροφορηθεὶς ὅτι ὃ ἐπήγγελται, δυνατός ἐστι καὶ ποιῆσαι.