Watch this video and understand how Galatians 1:4 sets the entire context of the book. Paul’s purpose is to encourage the Churches in Galatia to continue on in the Spirit until they received “perfection”. Paul’s message was that the Old Covenant and the evil age of that covenant were passing away and were about to be cast out. If they would remain faithful to the gospel, they would be delivered from the then-present Old Covenant age, and inherit the blessing of Abraham in the New Covenant.
The Institute Of Fulfilled Eschatology