“Even as David also describeth the blessedness of the man, unto whom God imputeth righteousness without works,”
King James Version (KJV)
4:6 So David also - David is fitly introduced after Abraham, because be also received and delivered down the promise. Affirmeth - A man is justified by faith alone, and not by works. Without works - That is, without regard to any former good works supposed to have been done by him.
Ro 4:6 Even as David also. Paul has shown that Abraham's justification which is not due to our own righteousness, but to God's mercy. Such names as that of Abraham, the father of their race, and David, the great king, would be authoritative with the Jews.