Matthew 7:20

Little children, let no man deceive you: he that doeth righteousness is righteous, even as he is righteous.

Doth a fountain send forth at the same place sweet water and bitter? Can the fig tree, my brethren, bear olive berries? either a vine, figs? so can no fountain both yield salt water and fresh.

What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him? Faith, if it hath not works, is dead, being alone.

By faith Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his only begotten son. Accounting that God was able to raise him up, even from the dead.