V.1 In the strongest language yet, Paul urges them to stand fast in the liberty wherewith Christ had made them free. Satan is so clever that he has turned many back from listening to the gospel of liberty to listening to that which puts men under slavery.
V.4 If anyone professes to be saved by grace, then turns to law keeping, Paul says such an one has fallen from grace. Let us be careful.
V.10 Paul expresses confidence that the Galatians would not be deceived by these law-teachers, and says that such teachers, will be held responsible.
V.13 We are delivered from the slavery of sin and brought into liberty, but not to act in self-will and carelessness. Think what it cost the Lord Jesus to bring us into this new life!
V.16-17 Living in the Spirit is our power to avoid indulging our own will.
V.19-23 The works of the flesh and the fruit of the Spirit contrasted. Surely we ought to be showing the fruit of the Spirit in our life.