Catholic teaching - "I baptize you in the name of the Father, the son and the Holy Spirit." The water is an essential part of the experience. Between each part of the Trinity, the infant has water poured on or is submerged in water.
We lived behind a church where my little brother was called over to sing in front of the entire congregation. Gary loved singing just like this little boy in the picture Out of the mouth of babes there is perfected praise."Sing Unto The Lord" !