(Excerpt - EJ Waggoner Article On Romans 4)
The Power of God's Word.
God "calleth those things which be not as though they were." Sometimes men do the same thing, but we soon lose confidence in them. When men speak of things that are not as though they were, there is only one proper name for it. It is a lie. But God calls those things that be not as though they were, and it is the truth. What makes the difference? Simply this: Man's word has no power to make a thing exist when it does not exist. He may say that it does, but that does not make it so. But when God names a thing, the very thing itself is in the word that names it. He speaks, and it is. It was by this power of God that Abraham was made the father of many nations, even of us, if we believe that Jesus died and rose again.
Quickening [Making Alive] the Dead. It is by the power of God's word which can speak of those things that be not as though they were and have it true, that the dead are raised. His word makes them live. It was Abraham's faith in the resurrection of the dead that made him the father of many nations. God's oath to Abraham was on the occasion of his offering Isaac. Gen. 22:15-18. And "by faith Abraham, when he was tried, offered up Isaac; and he that had received the promises offered up his only-begotten son, of whom it was said, that in Isaac shall thy seed be called; accounting that God was able to raise him up, even from the dead." Heb. 11:17-19.
Righteousness and the Resurrection of Jesus. The righteousness which was imputed to Abraham will be imputed to us also if we believe on him who raised up Jesus our Lord from the dead. Therefore it follows that righteousness was imputed to Abraham because of his faith in the resurrection of the dead, which comes only through Jesus. Acts 4:2. That was what the apostles preached the promises to the fathers. The power by which a man is made righteous is the power of the resurrection. See Philippians 3:9-11.
Php 3:9 And be found in him, not having mine own righteousness, which is of the law, but that which is through the faith of Christ, the righteousness which is of God by faith:
Php 3:10 That I may know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto his death;
Php 3:11 If by any means I might attain unto the resurrection of the dead.
This power of the resurrection, which works righteousness in a man, is the surety of the final resurrection to immortality at the last day by which he enters upon his inheritance.
Not Weakened in Faith. Some versions of Romans 4:19 give the idea, "Without being weakened in faith, he considered his own body now as good as dead." That is to say, after God had made the promise to him, a full consciousness of his weakness and of all the difficulties and seeming impossibilities in the way did not have any effect in weakening his faith.
Nothing is impossible with God, and there are no difficulties for him. Whenever a person is inclined to doubt the possibility of his salvation, let him stop and consider that God made the world by his word, and that he raises the dead, and that it is by that same power that God will save him if he is willing. To doubt God's promise to deliver us from all evil is to doubt the fact that he created all things by his word, and that he is able to raise the dead.