Stott says, "Timothy's duty will involve fight as well as flight, standing as well as running." Timothy is to flee from the false philosophies and fight against them through the present pursuit of "righteousness, godliness, faith, love, endurance and gentleness." Milne describes these God-given characteristics:
Righteousness comes first because, in contrast to the greedy teachers of Ephesus, it means doing what is morally right and pleasing to God. Although right is defined by the commands of God's moral law (1 Tim. 1:9ff), righteousness is a Christian quality because the gospel incorporates it. Through Christ's sin-destroying death and the life-giving Spirit the believer is enabled to fulfill the law's righteousness (Rom. 8:2ff).
Godliness is a deep, inner attitude of reverence for God that inspires righteousness, and penetrates the whole heart and behavior of the Christian. Righteousness and godliness appear together again in Titus 2:12 as outstanding qualities of the Christian who is living an unworldly life.
Faith is both a personal confidence in God through Jesus Christ and a mental acceptance of the truth of the gospel message and Scripture. Faith is the radical grace of the Christian life, but Paul is not following a logical order here (2 Pet 1:5ff).
Love in Paul's writings is always the outworking of faith (Gal. 5:6). Basically, love is an attitude as well as an emotion, which makes its presence felt by words and actions. Paul uses the same word here as is used elsewhere for God's sacrificial, self-giving love in Jesus Christ (1 John 4:7-11). This means that the Lord's servant must aim at reproducing the same quality of love in his own life and relationships.
Endurance is the strength to continue in the faith in the face of opposition (Col. 1:11). This opposition can come from inside the church or from the world outside. Either way the Lord's servant will only survive through endurance, which is the Lord's own strength tested and proved in his endurance to the end (Heb. 12:2).
Gentleness is the ability to respond without anger to human criticism just as Jesus did (2 Cor. 10:1; Gal. 5:22). His meekness and gentleness were the basis of his appeal to his followers (Matt. 11:29). Without gentleness the Lord's servant will soon damage the work and alienate people from himself and the gospel.
"Fight the good fight of the faith" is a metaphor for the Christian life, viewed in terms of faithfulness to Christ (2 Tim. 4:7). The Christian should not become complacent but grasp the eternal life to which they have been called. While faith in Christ begins new life (1 Tim. 4:8; 2 Cor. 5:17), the ultimate goal of the Christian life is always future or eschatological (1 Tim. 1:16; 6:19; Phil. 3:12; 2 Tim.4:8). Kistemaker says:
This life pertains to the future age, to be sure, to the realm of glory, but in principle becomes the possession of the believer even here and now. It is actually ever-lasting, never-ending, life. Yet, though whenever the life so qualified pertains to man the quantitative idea is not excluded, the emphasis is on the qualitative: this is the life which manifests itself in fellowship with God, in partaking of his holiness, love, peace, and joy.
Hughes likewise says:
Eternal life is, obviously, everlasting, but the emphasis here is on its quality. Eternal life is the life of the age to come, which is given only in Jesus Christ. As Jesus explained, "Now this is eternal life: that they may know you, the only true God, and Jesus Christ, whom you have sent" (John 17:3). Timothy, like all believers, has eternal life both as a present possession and as a future hope (1 Tim. 1:16 and 2 Tim. 1:10 give the present sense; Titus 1:2; 3:7 give the future sense).
Eternal life is not first something a saint initially chooses (John 15:16), but something to which God first elects them from all eternity (Eph 1:4-5, 11) and then calls them to in time (John 6:44, 65; cf. Rom. 8:30). The Holy Spirit first grasps his elect (Rom. 8:29-30; John 10:28), regenerates them (John 3:1-8), and gives them the gifts of repentance (2 Tim. 2:24-26) and faith (Eph. 2:8-10). By the sure act of God alone they are justified and adopted into the family of God. A process of sure sanctification results and continues until glorification. God continues to work in them "both to will and do of his good pleasure" (Phil. 2:13), which includes the "good-fight of faith" (1 Tim. 6:12).
Paul uses the phrase, "confession in the presence of many witnesses." This may refer to Timothy's baptism or to some other public ceremony in which he made profession. The "good confession" that one has come to faith in Christ leads naturally into the "good fight" of seeking to live in faithfulness to him. The Christian is not saved by the fight, but unto it (Eph. 2:8-10; TIt. 2:14).
fight the good fight of faith. In his farewell letter to Timothy (see note 2 Tim 2:3; 4:7), Paul will again take up the image of battle under Christ's command. Generally, Paul used the metaphor to describe the character of the Christian life in the overlap of the ages (cf. 1 Cor 9:24-27; Eph 6:10-18). It includes this, more particular, skirmish against false teaching. The battle begins with God's call and endures to 'eternal life.' To survive, however, the soldier must 'seize' or 'hold on tightly' to God, 'who gives life to everything' (6:13). This perseverance under fire is like Christ's own 'good confession' before Pontus Pilate, which resulted in resurrection, though through suffering and death.