Romans 10:17 - So then faith comes by hearing, and hearing by the word of God.
Faith does not “come” through natural genetic processes.
Faith truly has a vital link with blood—the blood of Christ, “whom God set forth to be a propitiation by His blood, through faith” (Romans 3:25 whom God has set forth to be a propitiation through faith in His blood, to declare His righteousness through the passing by of the sins that had taken place before, in the forbearance of God; ).
But an individual does not inherit faith through a natural bloodline; God did not see fit to encode faith in human DNA, so that it could be passed to offspring.
Christ’s disciples, in asking Him to “increase our faith” (Luke 17:5, And the apostles said to the Lord, Give us more faith. ), exhibit their understanding that God, not genetics, is the ultimate source of faith.
As such, faith does not belong to a particular race because God shows no partiality. Act 10:34 Then Peter opened his mouth and said, Truly I see that God is no respecter of persons; Rom 2:11 For there is no respect of faces with God.
The faith of the fathers like Abraham, Jacob and Isaac were made available to all, especially to the Gentile peoples of the world, and along with it, spiritual salvation, which became possible through faith. Christ has redeemed us from the curse of the law, . . . [so] that the blessing of Abraham might come upon the Gentiles through Christ Jesus, that we might receive the promise of the Spirit through faith” (Galatians 3:13-14).
Peter says as much to the church gathered in Jerusalem. InActs 11:17-18, he connects “the gift” given to the Gentiles with belief—faith—in Christ: ”If therefore God gave them [Gentiles] the same gift as He gave us when we believed on the Lord Jesus Christ, who was I that I could withstand God?” When they heard these things they became silent: and they glorified God, saying, “Then has God also granted to the Gentiles repentance to life.”
God’s Israel crosses natural racial or ethnic distinctions; the faithful of any race make up the Israel of God. These are the faithful who receive “the blessing of Abraham” (Galatians 3:14, so that the blessing of Abraham might be to the nations in Jesus Christ, and that we might receive the promise of the Spirit through faith.)