I seem to recall something about the baptismal formula i. e. "in the name of the Father, Son and Holy Spirit," not being specified by scripture but being mentioned in the letters of the fathers of the Christian church. Is this correct? Is the baptismal formula mentioned in the New Testament or is it traditional?
closed as off topic by Monica Cellio, Jack Douglas♦ Jan 21 at 13:48
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In the New Testament, it's found in Matthew 28:18-20:
Just to add a bit more theology to it, according to this and other Systematic Theology (See Wayne Grudem's Systematic Theology, chapter 18 on Prayer), doing something 'In the name of Jesus', as we see so frequently through the book of Acts, is a reference to 'in the authority of Jesus'. Therefore, adding "In Jesus' name" at the end of the prayer is not the be all and end all - instead, it is, to quote Grudem:
This may be what you were thinking of. Although Jesus told his disciples to baptize, the New Testament doesn't spell out exactly how baptism should be done. Detailed instructions can be found in chapter 7 of the Didache: