Yes, it is. And you should have checked that before making this comment.Faith is never called law the Bible.
Where is boasting then? It is excluded. By what law? of works? Nay: but by the law of faith. (Rom 3:27)
The law of faith is that the sinner's faith in Christ and His finished work of redemption is sufficient for God to deem it as righteousness, justify the sinner, and then impute the righteousness of Christ to him or her. See Romans 4.
But now the righteousness of God without the law is manifested, being witnessed by the law and the prophets; Even the righteousness of God which is by faith of Jesus Christ unto all and upon all them that believe: (Rom 3:21,22)
And that is why boasting is excluded. Justification is purely by God's grace, and eternal life is the GIFT of God to the one who believes, just as the Holy Spirit is also the GIFT of God.