Galatians 4:13-14, “Ye know how through infirmity of the flesh I preached the gospel unto you at the first, And my temptation, which was in my flesh, ye despised not, nor rejected; but received me as an angel of God, even as Christ Jesus.”
Wouldn’t you like to know what Paul’s infirmity was? Apparently it was active and obvious when he first ministered to the people of Galatia–in Antioch of Pisidia, Iconium, Lystra and Derbe. He reminds them here of how he preached truth to them in spite of his infirmity, and they listened with joy, receiving him as if he were an angel of God, or even Jesus Himself!
Paul did not go to the people in pomp and circumstance, with a great retinue of servants. He did not wear a fabulously expensive garment. Heralds did not run ahead of him to announce his coming. He simply preached, and people were touched by the truth of God’s Word inspite of the fact that the messenger had some sort of physical problem.
Why is Paul reminding the Galatians of those early days?
Because they need to go back there in their faith and doctrine.