Christian baptism is the immersion of a believer in water in the name of the Father, the Son, and the Holy Spirit. It is an act of obedience symbolizing the believer's faith in a crucified, buried, and risen Savior, the believer's death to sin, the burial of the old life, and the resurrection to walk in newness of life in Christ Jesus. It is a testimony to his faith in the final resurrection of the dead. It is an outward expression of an inward faith.
Paul's final letters were personal and practical instructions regarding how people ought to conduct themselves in God’s household, which is the church of the living God (1 Tim. 3:15). God’s household is the church, and clearly the church matters. All of us could use a reminder of what the local church is supposed to look and act like.