Yet he did not waver through disbelief in the promise of God, but was strengthened in his faith and gave glory to God,
20. Nor did he through unbelief make an inquiry, etc. Though I do not follow the old version, nor Erasmus, yet my rendering is not given without reason. The Apostle seems to have had this in view, — That Abraham did not try to find out, by weighing the matter in the balance of unbelief, whether the Lord was able to perform what he had promised.
Having observed when Abraham was justified by faith, and why, for the honour of Abraham and for example to us who call him father, the apostle here describes and commends the faith of Abraham, where observe, I. Whom he believed: God who quickeneth. It is God himself that faith fastens upon: other foundation can no man lay.
Commenting on Romans 4:17-22
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.