Galatians 3:3-6

Are you so foolish and senseless? Having begun [your new life by faith] with the Spirit, are you now being perfected and reaching spiritual maturity by the flesh [that is, by your own works and efforts to keep the Law]? Have you suffered so many things and experienced so much all for nothing—if indeed it was all for nothing? So then, does He who supplies you with His [marvelous Holy] Spirit and works miracles among you, do it as a result of the works of the Law [which you perform], or because you [believe confidently in the message which you] heard with faith? Just as Abraham BELIEVED GOD, AND IT WAS CREDITED TO HIM AS RIGHTEOUSNESS, [as conformity to God’s will and purpose—so it is with you also]. [Gen 15:6]