Since the Bible does not tell us everything. How do you think 3,000 people were immersed in one day in Jerusalem.<quoted text>
So now Brian is Catholic Pope and speaks for the Church and not himself:-) You're too funny Brian:-)
Let's get to the root of the Spirit and its relation to immersion:
God gave a promise that is the fulfillment of the promise to Abraham - the part about the blessings to the whole earth - whosoever that would come to Him through the Son who gave His life for the whole world - but only those who accepted Him and His teachings.
Go back and read Acts 1-3, then revisit 2:38,39. Where did God ever condone dividing that which He joined together? So rather than trying to divide the word of truth, we'd be advised to grasp how it goes together in a way that shows the truth of the whole to be consistent. Immersion had a type in the OT priesthood, the priests cleansed themselves before putting on their robes to serve in the Temple. John the immerser baptized people for forgiveness of sins to prepare for Master YHWH. Jesus said to immerse disciples made in the name of the FSH. Peter said to those convicted to believe in Jesus as Christ that they were to be immersed for the forgiveness of sin and the gift of the Holy Spirit - but this was not just for those present on Pentecost - it was given as a promise from that very day forward - to as many as the Lord would call and to those who responded as those very first disciples in Jerusalem.
To cut immersion off from the commandment of God with promise for all is to seek to do great damage to the very word and promise of God - yet there are not few who defame this truth and promise of God. We all know the verse -'God is not mocked'?
What body of water did they use? That is only one of the problem with protestants trying to interpret the Bible. They have no concept of the historical, geographical and sociological aspects that have to be taken into account.
One only has to at historical documents like the Didache to confirm specifically how baptisms were done.
One prime example is household. In those times a household were the immediate family, their children and their children's children. Their slaves and their slave's children.
Low end prots want to believe of all the households baptized in the Bible there were no children in any of them. Children are a gift from God. All that could have children had many.