Ver. 16. +To reveal His Son in me that I might preach Him.+--The revealing of His Son by me to the Gentiles was impossible, unless He had first revealed His Son in me; at first on my conversion, but especially at the subsequent revelation from Jesus Christ (ver. 12), whereby I learnt the Gospel's independence of the Mosaic law. Ver. 24. +They glorified God in me.+--He does not say, adds Chrysostom, they marvelled at me, they praised me, they were struck with admiration of me, but he attributes all to grace. They glorified God in me. How different, he implies to the Galatians, their spirit from yours. _MAIN HOMILETICS OF THE PARAGRAPH.--Verses_ 1-5. _Apostolic Credentials._ +I. That apostolic credentials claim distinctively Divine authority.+--"Paul, an apostle, not of men, neither by man, but by Jesus Christ and God the Father" (ver. 1). It must have been a painful moment when Paul first became aware that spurious teachers questioned the validity of his apostolic call, and a still more painful disappointment when he discovered his Galatian converts so readily gave credence to those who maligned him. His fears were roused, not so much for his personal reputation as for the injury to the religious life of his converts if they cherished suspicions as to the Divine character of the truth they had been taught. The mischief must be dealt with at once. He boldly and emphatically declared that his commission was direct from God and bore the same Divine stamp as that of the other apostles, whose authority even the false teachers had not the temerity to deny. It has been ever the _rôle_ of the subtle adversary of man to strive to eliminate the Divine element from the truth and drag it down to a common human level. Truth then loses its stability, begins to move in a flux of confused human opinions, and the soul is plunged into bewilderment and doubt. Whatever tends to vitiate the truth brings peril to the peace and upward progress of the soul. The power of the teacher increases with an ever-deepening conviction of the Divine authority of his message.