Romans 4:21

21 Most fully knowing that whatsoever he has promised, he is able also to perform.

Romans 4:21 In-Context

19 And he was not weak in faith. Neither did he consider his own body, now dead (whereas he was almost an hundred years old), nor the dead womb of Sara.
20 In the promise also of God he staggered not by distrust: but was strengthened in faith, giving glory to God:
21 Most fully knowing that whatsoever he has promised, he is able also to perform.
22 And therefore it was reputed to him unto justice.
23 Now it is not written only for him. that it was reputed to him unto justice,
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