Romans 4:5

For if Abraham was justified by works, he has something to boast about, but not toward God.

For what does the Scripture say? “Abraham believed God, and it was accounted to him for righteousness.”

Now to him who works, the reward is not counted as grace, but as something owed.

Even as David also pronounces blessing on the man to whom God counts righteousness apart from works:

“Blessed are they whose iniquities are forgiven,

whose sins are covered.

Blessed is the man whom the Lord will by no means charge with sin.”