live in a manner worthy of the gospel of Christ is to live a life consistent with God's revealed Word. That includes living a life that corresponds to the divine truth Christians profess to believe, preach, teach, and defend. In other words, it means living with integrity in every facet of life. This mandate is expressed elsewhere in the New Testament as walking âin a manner worthy of the calling with which you have been calledâ (Eph. 4:1), âin a manner worthy of the Lord, to please Him in all respects, bearing fruit in every good work and increasing in the knowledge of Godâ (Col. 1:10), and âin a manner worthy of the God who calls you into His own kingdom and gloryâ (1 Thess. 2:12; cf. 4:1). It means âshowing all good faith so that [believers] will adorn the doctrine of God [their] Savior in every respectâ (Titus 2:10), demonstrating âholy conduct and godliness,â and being âdiligent to be found by Him in peace, spotless and blamelessâ (2 Peter 3:11, 14).The church's greatest testimony before the world is spiritual integrity. When Christians live below the standards of biblical morality and reverence for their Lord, they compromise the full biblical truth concerning the character, plan, and will of God. By so doing, they seriously weaken the credibility of the gospel and lessen their impact on the world. God's people have always been at enmity with the world, because the world is at enmity with God (Rom. 1:28; 5:10; Eph. 2:3; Col. 1:21). But the world can hardly be expected to embrace a faith whose proponents so little emulate its standards of holiness and fail to manifest the transforming power of Christ.