Traditional Catholic Prayers: Baptism
1 And *in the end of the sabbath, when it began to dawn towards the first day of the week,
18 And Jesus coming, spoke to them, saying: All power is given to me in heaven and in earth.
19 *Going, therefore, teach ye all nations: baptizing them in the name of the Father, and of the Son, and of the Holy Spirit;
20 Teaching them to observe all things whatsoever I have commanded you: and behold I am with you all days, even to the consummation of the world.
"Consummation of the world," - the end of this age of grace and the beginning of the eternal ages with Christ reigning visibly. This is the end of the eschaton and the beginning of the eternal recreated heavens and the earth and will begin when Our Lord and Saviour Jesus Christ returns from heaven in the same flesh He rose with and ascended into the third heaven with, seated at the right hand of the Father. His return will be with all of His elect angels. He will raise and judge all men in the flesh and then recreate the heavens and the earth, which in that state will last that way for eternity. There will NOT be any sin in the new heavens and earth, so prepare now by confessing the Father and the Son and the Holy Spirit and be baptized as commanded above and shown how to baptize below and live Holy and Godly lives in sincerity and humility and meekness waiting for the Lord when He returns so that we are not like the five foolish virgins but are like the five wise virgins.
1: A.D. 30.; Mark xvi. 1.; John xx. 1.
19: Mark xvi. 15.
Method of Baptism
From the Didache (49 A.D. Council of Jerusalem):
Chapter 7. Concerning Baptism.
And concerning baptism, baptize this way: Having first said all these things, baptize the one to be baptized into Jesus Christ in "the name of the Father, and of the Son, and of the Holy Spirit," in running water. But if you have no running water, baptize into other water [still water]; and if you cannot do so in cold water, do so in warm. But if you have neither, pour out water three times upon the head onto the one to be baptized saying at that time "in the name of Father and of the Son and of the Holy Spirit." But before the baptism, if possible, let the baptizer fast, and the baptized, and whoever else can; but you shall order the baptized [when there is time] to fast one or two days before.
Baptism can and should always be performed immediately when there is danger of death of the one to be baptized. For instance, impending martyrdom or possible death causing illness.