Romans 4:21

21 being fully persuaded that he was also powerful to do all that he had promised;

Romans 4:21 Meaning and Commentary

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.

Romans 4:21 In-Context

19 And he did not weaken in faith: he considered not his own body now dead when he was about one hundred years old, neither yet the deadness of Sara’s womb;

20 he doubted not the promise of God, with unbelief, but was strengthened in faith, giving glory to God,

21 being fully persuaded that he was also powerful to do all that he had promised;

22 therefore, his faith was also attributed unto him as righteousness.

23 Now it is not written for his sake alone that it was so reckoned to him,