But we are all like an unclean thing, And all our righteousnesses are like filthy rags; We all fade as a leaf, And our iniquities, like the wind, Have taken us away. Isaiah 64:6

 But to him who does not work but believes on Him who justifies the ungodly, his faith is accounted for righteousness. Romans 4:5

 If you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved. For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation. Romans 10:9-10