Romans 4:2, 13-15

For if Abraham was justified [that is, acquitted from the guilt of his sins] by works [those things he did that were good], he has something to boast about, but not before God.

For the promise to Abraham or to his descendants that he would be heir of the world was not through [observing the requirements of] the Law, but through the righteousness of faith. [Gen 17:4-6; 22:16-18] If those who are [followers] of the Law are [the true] heirs [of Abraham], then faith [leading to salvation] is of no effect and void, and the promise [of God] is nullified. For the Law results in [God’s] wrath [against sin], but where there is no law, there is no violation [of it either].