According to the examples in The Bible, a true Christian baptism consists of being fully emerged into water and then brought back up. (Matthew 3:16; Acts 8:38) The person getting baptized should have sufficient knowledge of Jehovah God, His purposes, and be willing to abide by His principles over our own, a.k.a. making a dedication to Him. They're also to be baptized in the name of the Father, the Son, and the Holy Spirit, according to the command Jesus gave to his disciples. (Matthew 28:19-20)
(New World Translation of the Holy Scriptures)
John the son of Zechariah and Elizabeth was the 1st human to be authorized by Jehovah God to perform water baptism. (Luke 1:5-7,57) John 1:6 mentions of John, “There arose a man that was sent forth as a representative of God: his name was John.” “God’s declaration came to John the son of Zechariah in the wilderness. So he came . . . preaching baptism.” (Lu 3:2, 3) The baptism performed by John was a public demonstration and a symbol of the person's repentance of his sins. John's work served to “get ready for Jehovah a prepared people.” (Lu 1:16, 17) Such a work had been prophesied by Isaiah and Malachi.—Isaiah 40:3-5; Malachi 4:5, 6. John knew that his work was preparing the way before God’s Son and Messiah and would give way to the greater ministry of that One. The reason for John’s baptizing was that the Messiah might be made manifest to Israel. (John 1:31)
Baptism initiates us into the Christian community.
Christian baptism started with the Apostles, and then with them baptizing those who came to believe.
Christian baptism is approximately 2000 years old.
Baptism is a Christian concept.
Baptism can be for other Christian faiths, not just Catholic. So if you are becoming a Christian, you are baptised.
Judaism doesn't have baptism, that is a strictly Christian ceremony.
Jews do not have baptism. It is a Christian observance.
in baptism
From the RC point of view: The Sacraments of initiation: Baptism / Communion / Confirmation. In current times "Baptism", and baptism alone is considered the entry life into Christian life.
Roman religion did not have baptism. Only Christian Romans had baptism and their beliefs about it were the same as that of modern Christians.
Baptism always included in Christian initiation because it is accomplished by means of the sacraments which establish the foundations of Christian life,but Christian initiation not only hold the Baptism but to other sacraments of the church also. The faithful born anew by Baptism are strengthened by Confirmation and are then nourished by the Eucharist.