The ordinances of baptism and the Lord's Supper are two monumental pillars, one without and one within the church. Upon these ordinances Christ has inscribed the name of the true God. CCh 295.1
Christ has made baptism the sign of entrance to His spiritual kingdom. He has made this a positive condition with which all must comply who wish to be acknowledged as under the authority of the Father, the Son, and the Holy Spirit. Before man can find a home in the church, before passing the threshold of God's spiritual kingdom, he is to receive the impress of the divine name, “The Lord Our Righteousness.” Jeremiah 23:6. CCh 295.2
Baptism is a most solemn renunciation of the world. Those who are baptized in the threefold name of the Father, the Son, and the Holy Spirit, at the very entrance of their Christian life declare publicly that they have forsaken the service of Satan and have become members of the royal family, children of the heavenly King. They have obeyed the command: “Come out from among them, and be ye separate, ... and touch not the unclean thing.” And to them is fulfilled the promise: “I will receive you, and will be a Father unto you, and ye shall be My sons and daughters, saith the Lord Almighty.” 2 Corinthians 6:17, 18. CCh 295.3
The vows which we take upon ourselves in baptism embrace much. In the name of the Father, the Son, and the Holy Spirit we are buried in the likeness of Christ's death and raised in the likeness of His resurrection, and we are to live a new life. Our life is to be bound up with the life of Christ. Henceforth the believer is to bear in mind that he is dedicated to God, to Christ, and to the Holy Spirit. He is to make all worldly considerations secondary to this new relation. Publicly he has declared that he will no longer live in pride and self-indulgence. He is no longer to live a careless, indifferent life. He has made a covenant with God. He has died to the world. He is to live to the Lord, to use for Him all his entrusted capabilities, never losing the realization that he bears God's signature, that he is a subject of Christ's kingdom, a partaker of the divine nature. He is to surrender to God all that he is and all that he has, employing all his gifts to His name's glory. CCh 295.4