Below is a preaching manuscript outline built for a sermon, class lecture, or chapel message on believer baptism. It follows the 1689’s logic and gives you a movement from confession to Scripture to application.[1][2][3]
Believer Baptism: Christ’s Ordinance for Confessing Disciples[3][1]
Baptism is Christ’s appointed sign for those who have repented and believed, marking their union with him, their entrance into the visible church, and their public confession of discipleship.[4][1][3]
Primary: Matthew 28:18–20, Acts 2:37–41, Romans 6:3–5.[1][3] Supporting: Colossians 2:11–12, Acts 8:12, 36–38, Acts 22:16.[5][6][7]
The foundation of baptism is not church custom but Christ’s commission. The order in Matthew 28 matters: make disciples, baptize them, teach them. That means baptism belongs to those who are already being discipled, not to those presumed to be disciples by birth.[2][3][4][1]
In Acts 2, Peter calls for repentance, and those who receive the word are baptized. This pattern continues in Acts 8, where belief precedes baptism. Reformed Baptists appeal to this apostolic order because it shows baptism following credible profession, not preceding it.[6][8][3][1]
Romans 6 presents baptism as a sign of being buried with Christ and raised to walk in newness of life. The confession uses this logic explicitly: baptism is a sign of fellowship with Christ in his death and resurrection. This is why baptism is not merely an outward badge; it is a gospel-shaped sign pointing to a real saving union already received by faith.[9][2][3][4][5]
The Reformed Baptist argument is that baptism must be defined by the New Covenant, not by Old Covenant membership patterns. James Renihan stresses that the New Covenant admits those who make a credible profession of faith. That covenantal structure is why believer baptism is not just a mode issue but a covenant membership issue.[8][10][11][6]
The 1689 connects baptism with church life, and Acts 2 links baptism with addition to the visible community. Baptism is therefore both personal and ecclesial: it is an individual confession and a church-recognized entrance into visible discipleship. Keach and later Reformed Baptist writers press this point because baptism and local church membership belong together.[12][3][4][8][1]