The apostle Paul saw self-discipline as a key factor in dealing with the matter of meats offered to idols, as well as his own effectiveness in ministry. Although a different Greek word is used, he describes self-discipline in athletic terms: “Therefore I run in such a way, as not without aim; I box in such a way, as not beating the air; but I discipline my body and make it my slave, so that, after I have preached to others, I myself will not be disqualified” (1 Cor. 9:26-27).
Self-discipline is the exercise of self-control in action in such a way as to avoid what is unprofitable, and to pursue that which is of eternal profit. It is both negative in that it avoids the unprofitable, while it is positive in striving for what is godly and of everlasting good. It is listed as one of the essential steps of Christian maturity in 2 Peter 1:6, to be added to faith, moral excellence and knowledge.
Why is self-discipline important? Consider the following reasons:
- Self-indulgence is characteristic of our former way of life as unbelievers (Titus 3:3; Eph. 2:1-3), and also of the flesh (Gal. 5:19-21).
- Self-indulgence characterizes false teachers (Isa. 56:10; Jer., 23:1-12; Ezek. 34:1-16; 2 Peter 2:1-3). It is also descriptive of the way of life of unbelievers in the end times (2 Tim. 3:1-5).
- Lack of self-control makes one vulnerable to Satan’s attacks (1 Cor. 7:5).
- Self-control is required of all Christians (2 Pet. 1:6), and is a fruit of the Spirit (Gal. 5:22-23).
- Self-discipline is necessary for the development and exercise of one’s spiritual gift (2 Tim. 1:6-7).
- Because elders are to lead by example, as well as by instruction, they must exemplify self-discipline in their own lives.
- Lack of self-discipline disqualifies one (1 Cor. 9:27; Titus 1:8).