2 Timothy 2:1-4
You therefore, my son, be strong in the grace that is in Christ Jesus. And the things which you have heard from me in the presence of many witnesses, these entrust to faithful men, who will be able to teach others also. Suffer hardship with me, as a good soldier of Christ Jesus. No soldier in active service entangles himself in the affairs of everyday life, so that he may please the one who enlisted him as a soldier.