And the scripture, foreseeing that God would justify the heathen through faith, preached before the gospel unto Abraham, saying, In thee shall all nations be blessed.

The Scripture foresaw that God would justify the Gentiles by faith, and foretold the gospel to Abraham: “All nations will be blessed through you.”

So then they which be of faith are blessed with faithful Abraham.

So those who have faith are blessed along with Abraham, the man of faith.