The truth is another expression for the word of God (John 17:17 and notes). It means the reality, denoting all the real things revealed in God's word, which are mainly Christ as the reality of all the things of God. The manifestation of the truth refers to the apostles' living of Christ. When they lived Christ, who is the truth (John 14:6), they manifested the truth. As Christ was lived out of them, the truth was manifested in them. By this, they commended themselves to every conscience of men before God. The apostles behaved themselves not in the way of adulterating the word of God but in the way of manifesting the truth for the shining of the gospel of the glory of Christ, by the excellent power of the priceless treasure, the very Christ who entered into them and became their content (v. 7) through the enlightenment of God's shining (v. 6).
