The reading is from St. Paul's Second Letter to Timothy 2:1-10

Timothy, my son, be strong in the grace that is in Christ Jesus, and what you have heard from me before many witnesses entrust to faithful men who will be able to teach others also. Share in suffering as a good soldier of Christ Jesus. No soldier on service gets entangled in civilian pursuits, since his aim is to satisfy the one who enlisted him. An athlete is not crowned unless he competes according to the rules. It is the hardworking farmer who ought to have the first share of the crops. Think over what I say, for the Lord will grant you understanding in everything.

Remember Jesus Christ, risen from the dead, descended from David, as preached in my gospel, the gospel for which I am suffering and wearing fetters like a criminal. But the word of God is not fettered. Therefore I endure everything for the sake of the elect, that they also may obtain salvation in Christ Jesus with its eternal glory.