God the Father had called the Christians in Galatia in the grace of Christ. He was gracious to them and called them to follow His Son, who had come to save sinners.
The gospel of Christ is stated in Galatians 1:4: The Lord Jesus Christ gave Himself for our sinners.
In Adam we died. Adam and Eve were sentenced and expelled from the Garden of Eden because of their rebellion. As Adam's offspring, We have to suffer and die for our sins. But in Christ we live. We are welcomed back into God's grace. We are saved, forgiven, and accepted into the Kingdom of God. As Christ's disciples, we have joy and peace in believing. Christ has dealt with our sins with His blood. He had dealt with our sins by the cross at Calvary. He took our consequences and position so that we could take His position and consequences. Christ had delivered us from this present evil age. Our world is going from bad to worse. Sin and evil abound, temptations are numerous and powerful, and feelings of guilt, sadness, hopelessness, and fear predominate. The world is coming to an end. The Day of Judgment is approaching. The day of reckoning is at hand. But in Christ, we are saved from sin and death. We are saved from the judgment of God by the blood of the Passover Lamb! Christ had delivered us according to the will of our God and Father. The Gospel is the love of the Father, incarnate in His Son who came to the earth to save us by an undeserved death on a cross. Glory be to God for sending His Son to save us from a life of eternal death!
Even in Paul's time, there were those who perverted the Gospel. They claimed to preach the gospel, but it is no gospel at all! They preached a man-centered gospel, pleasing to the ears and eyes. But it would do us no good! Salvation is of God. It is God who in His mercy justifies us sinners! Salvation is by grace through faith all the way, and never by works! It is all of grace, nothing else but grace!
Thanks be to God who has deemed to save us and reveal Himself to us! All of grace, nothing else but grace!