2 Timothy 2:2-5

2And the things thou hast heard of me in the presence of many witnesses, these entrust to faithful men, such as shall be competent to instruct others also.

3Take thy share in suffering as a good soldier of Jesus Christ.

4No one going as a soldier entangles himself with the affairs of life, that he may please him who has enlisted him as a soldier.

5And if also any one contend [in the games], he is not crowned unless he contend lawfully.