Romans 4:2-5

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 what does the Scripture say? “ABRAHAM BELIEVED IN (trusted, relied on) GOD, AND IT WAS CREDITED TO HIS ACCOUNT AS RIGHTEOUSNESS (right living, right standing with God).” [Gen 15:6] Now to a laborer, his wages are not credited as a favor or a gift, but as an obligation [something owed to him]. But to the one who does not work [that is, the one who does not try to earn his salvation by doing good], but believes and completely trusts in Him who justifies the ungodly, his faith is credited to him as righteousness (right standing with God).