Romans 4:21
and being fully convinced that what He had promised He was also able to perform.
Truth to Learn
God’s ability to keep His promises never changes.
Behind the Words
The Greek word translated “being fully convinced” is plērophoreō, which is a compound made up of plerēs, meaning “full,” and a form of phoreō, which means “to fill.” Hence, in its root meaning this word implies that something is “fully filled” or “completely full.” By implication it means “to fulfill, to thoroughly accomplish, or to be completely convinced.” In this case it means that Abraham’s faith was as complete and solid as humanly possible. There was no room for doubt.
“Able” is translated from dunatos, which is the noun form of the verb dunamai, meaning “to be strong” or “to be able;” that is, to have the power to do something. Hence, dunatos means “having the power or ability.”
The word translated “is” is the verb eimi, which is the verb of being (“to be”). It is expressed here in the present tense, active voice, indicative mood which implies current action. In other words, it should be translated “He is.”
“Perform” is from the Greek verb poieō, meaning “to make” or “to do.”
Meaning Explained
You will recall that in the previous verse we noted Abraham’s faith was consistent and strong (not wavering at all) and his faith glorified God. This verse adds some further definition to that faith which Abraham had. The first thing that Paul says in this verse is that Abraham was fully convinced. This is another way of saying that he had no doubts at all. This may sound like a repetition of what was said in the previous verse, but there is a subtle difference. Not only was Abraham’s faith not wavering (growing stronger and weaker over time), but it was as fully filled-up as it could possibly be.
The thing that Abraham was fully convinced about was that God is able to do what He had promised (that Abraham would be the father of many nations). You will notice that I said “is able to do” not “was able to do.” As noted in “Behind the Words,” the form of this verb indicates current action (He is able to do). So what’s the significance of this? It is as significant as what Jesus said when He was discussing with the Jews about what it really means to be a son of Abraham. When the Jews asked Him if He was greater than Abraham, He said:
Truly, truly, I say to you, Before Abraham was, I AM! (John 8:58)
He did not say “before Abraham was, I was” because Jesus, being God, is eternal. He never ceases to exist and, in fact, He exists simultaneously at all points in time past, present, and future. Likewise in the verse we are looking at today, the Apostle Paul says, “what He had promised, He is also able to perform.”
Application
God’s ability to perform his promise to Abraham, and His ability to fulfill the promises that He makes to us today through his Word, never ceases to exist. He is always able to fulfill them. In other words, His power and His commitment to us are eternal and they never change. Hallelujah!
In God’s service, for His glory,
Copyright © 2010 Will Krause. All rights reserved.
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
If this message or this link was forwarded to you by a friend and you wish to receive future verses directly to your inbox, you can call the church phone 
(618) 614-3070 and leave a message telling us your name and e-mail address or you can send an e-mail to: