No soldier on active duty, gets himself involved in the affairs of civilian life, so that he can please the person who enlisted him [i.e., his commanding officer].

If we prove to be unfaithful [i.e., to our commitment to Christ], He [still] remains faithful [to His word], for He cannot deny Himself. [Note: This verse refers to Christ remaining true to His promise of either accepting or rejecting us. See Matt. 10:32-33].

If a person rids himself of the common ones [i.e., the influences of evil people and qualities], he will be an instrument for [God's] honor, dedicated, suitable for use by the Master, [and] prepared for [doing] every good deed.

But you should continue [to believe and practice] what you have learned and been convinced of, knowing those from whom you learned it. [Note: These persons would include Lois and Eunice (See 1:5), as well as Paul himself].