Romans 4:2, 13-15

For if Abraham was justified by works, 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 the Law, but through the righteousness of faith. For if those who are of the Law are heirs, faith is made void and the promise is nullified; for the Law brings about wrath, but where there is no law, there also is no violation.