Infant baptism is a God-ordained means of ecclesiastical unity. When children are brought into the covenant of grace through baptism, the washing with water prepares him to live with others who are washed in the fellowship of the Spirit. Little ones–infants–serve as a perpetual reminder that God continues to bind together His church and the church’s households.
Our catholic communion on the Lord’s Day is the effectual means God uses to wash His bride, but what takes place in the home–the domestic church–is the continual preparation for unity. In the home, covenant children are to be reminded that their baptisms calls them to daily renewal through repentance and confession. In order for children to understand the catholic church, they are to learn to live in the domestic church first. Hence, the parental call to train in righteousness is even higher. The disunity of the church at large may stem from the disunity of the domestic church. The baptism of the church is a baptism unto life. Hence, baptism calls infants to live in a home that is washed and cleansed from the stain of outsiders, so that they may pursue unity in the entire church.