And being fully persuaded that, what he had promised, he was able also to perform. And being fully persuaded - πληροφορηθεις, his measure: his soul was full of confidence, that the truth of God bound him to fulfill his promise and his power enabled him to do it.
Related Commentaries of Romans 4:21
Romans 4:21
21 And being fully persuaded that, what he had promised, he was able also to perform.