The Bible is the Holy Spirit’s book; He inspired it and He empowers it. It is the primary instrument He uses to convict the world of sin (John 16:8–11; Acts 2:37); to point sinners to the Savior (John 5:39; 1 John 5:6); and to conform believers into the image of their Lord (2 Cor. 3:18; 1 Peter 2:2). Accordingly, the Scriptures are described as “the sword of the Spirit.” For believers, that sword is a Spirit-empowered means of defense against temptation (Eph. 6:17); for unbelievers, it is an implement of precision used by the Holy Spirit to pierce hearts of unbelief (Heb. 4:12). A comparison of Ephesians 5:18 with Colossians 3:16 demonstrates that the command to “be filled with the Spirit” is parallel to the command to “let the word of Christ dwell in you richly,” since they both produce the same results (cf. Eph. 5:18–6:9; Col. 3:16–4:1).