Jesus says: “Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit” (Matthew 28:19).
Luther explains: “What is Baptism? Baptism is not just plain water, but it is the water included in God’s command and combined with God’s Word.”
Salvageable adds: The Word of God that empowers Holy Baptism is God’s name—that name that describes him as three Persons yet one God (“in the name,” not, “in the names”). When that name is spoken while water is applied to a person, a baptism occurs. God does not say how much water to use. Clearly, if someone were to substitute some other name for God’s name—or some other substance for water—no baptism would occur. When a baptism has occurred, however, that person is baptized, and under no account should that person be baptized again.
Baptism does not depend upon the goodness of the person being baptized. The person being baptized is a sinner who needs a Savior. Baptism brings that person to Jesus, the only Savior. Baptism does not depend upon anything said by the person being baptized. Those who were not baptized as children are usually taught the beliefs of the Church before being baptized, but even little children receive the benefits of baptism. Jesus told his Church to baptize all nations, not all adults. He said that we must enter his kingdom in the manner of little children. The apostles, according to the book of Acts, baptized entire households, and households usually include children.
Baptism does not even depend upon the goodness of the person performing the ceremony. If a Christian was to learn that the person who performed his or her baptism was a hypocrite, a heretic, an imposter, or even an unbeliever, the baptism would still be valid. Baptism depends upon God’s promises, which is why baptism is not done a second time even if the person who once was baptized spends years as an unbeliever and an enemy of Christ and His Church. J.