Romans 4:4-5
4, 5. Now to him that worketh—as a servant for wages.
is the reward not reckoned of grace—as a matter of favor. but of debt—as a matter of right.5. But to him that worketh not—who, despairing of acceptance with God by "working" for it the work of obedience, does not attempt it.
but believeth on him that justifieth the ungodly—casts himself upon the mercy of Him that justifieth those who deserve only condemnation. his faith, &c.—(See on Ro 4:3).Second: David sings of the same justification.
Romans 11:6
6. And, &c.—better, "Now if it (the election) be by grace, it is no more of works; for [then] grace becomes no more grace: but if it be of works," &c. (The authority of ancient manuscripts against this latter clause, as superfluous and not originally in the text, though strong, is not sufficient, we think, to justify its exclusion. Such seeming redundancies are not unusual with our apostle). The general position here laid down is of vital importance: That there are but two possible sources of salvation—men's works, and God's grace; and that these are so essentially distinct and opposite, that salvation cannot be of any combination or mixture of both, but must be wholly either of the one or of the other. (See on Ro 4:3, Note 3.)