Romans 4:21

21 being fully persuaded that God had power to do what he had promised.

Read Romans 4:21 Using Other Translations

And being fully persuaded that, what he had promised, he was able also to perform.
fully convinced that God was able to do what he had promised.
He was fully convinced that God is able to do whatever he promises.

What does Romans 4:21 mean?

John Gill's Exposition of the Bible
Romans 4:21

And being fully persuaded
He had not only faith, a strong faith, but full assurance of faith:

that what he [God] had promised;
though it was so long ago, and there were so many difficulties in the way;

he was able,
being the Lord God Almighty,

to perform;
so his faith rested upon the power of God, with whom nothing is impossible.

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