Charles Spurgeon Commentary Galatians 3:8

"And the scripture, foreseeing that God would justify the Gentiles by faith, preached the gospel beforehand unto Abraham, [saying,] In thee shall all the nations be blessed." — Galatians 3:8 (ASV)

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.

That is, "in you, because you are the father of believers. You are a sort of head and prototype of men who believe in me, and so, in thee shall all nations be blessed; and in your seed, too, as you will be the father of the Christ, shall all nations be blessed."

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.

That is the gospel; and we are blessed by it, because we believe in Christ, and so become the children of believing Abraham.

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.

Just as Abraham was blessed, so are the nations to be blessed, that is, by faith. By faith, they become his spiritual seed; by faith, they enter into his covenant; by faith, they receive the blessings of grace.