to which I was appointed as a preacher, an apostle, and a teacher.
Paul was appointed a preacher, apostle, and teacher of this gospel.
It links Paul's suffering to his commission.
3I thank God, whom I serve with a clear conscience as did my forefathers, as I constantly remember you night and day in my prayers. 4Recalling your tears, I long to see you so that I may be filled with joy. 5I am reminded of your sincere faith, which first dwelt in your grandmother Lois and your mother Eunice, and I am convinced is in you as well. 6For this reason I remind you to fan into flame the gift of God, which is in you through the laying on of my hands. 7For God has not given us a spirit of fear, but of power, love, and self-control. 8So do not be ashamed of the testimony of our Lord, or of me, His prisoner. Instead, join me in suffering for the gospel by the power of God. 9He has saved us and called us to a holy calling, not because of our works, but by His own purpose and by the grace He granted us in Christ Jesus before time began. 10And now He has revealed this grace through the appearing of our Savior, Christ Jesus, who has abolished death and illuminated the way to life and immortality through the gospel, 11to which I was appointed as a preacher, an apostle, and a teacher. 12For this reason, even though I suffer as I do, I am not ashamed; for I know whom I have believed, and I am convinced that He is able to guard what I have entrusted to Him for that day.