From Paul, an apostle who is not sent from human authority or commissioned through human agency, but sent through Jesus Christ and God the Father who raised him from the dead;
References for Galatians 1:1
and from all the brothers and sisters with me. To the churches in Galatia.
Grace and peace to you from God the Father and the Lord Jesus Christ.
He gave himself for our sins, so he could deliver us from this present evil age, according to the will of our God and Father.
To God be the glory forever and always! Amen.
I'm amazed that you are so quickly deserting the one who called you by the grace of Christ to follow another gospel.
References for Galatians 1:6