OK, I’ll only use Scripture, but you too, OK?
Why did John baptize Jesus? Why would Jesus seek out John to be baptized? I mean why not just have anybody do it?
Furthermore, by what right did John call people to repentance and how could they repent prior to Christ’s death and resurrection?
Why would John baptize? Are you familiar with the water rituals of the Hebrews? If not, take a look. https://en.wikipedia.org/wiki/Tvilah#Full-body_immersion
Why is John in the wilderness? Why do the people come to him and confess their sins? Why do they submit to baptism? Why does John call the Pharisees and Sadducees a “brood of vipers”?
That will be days of fruitful study for you in the Bible. Try here: http://biblehub.com/ or your preferred site. Do take a look at the Greek, the word choices, origins and actual meanings.
Enjoy.
Why do you wish to make it more difficult than it is? I have never understood the need for all this ritual and picking apart of the Word. Except to make one feel superior to others with their intellect and knowledge.
Repent ye, and believe the gospel. Mark 1:15
All that is required is this, but not all who say they believe have truly believed. Water baptism is a ritual that lets other believers know that one has repented, believed, and been indwelt with the Holy Spirit. It is an outward sign of salvation to others in the faith. I have not personally been baptized with water, but I have been baptized by the Spirit.
I have no need of Greek or anything else you’ve cobbled together here. What Jesus said about being born again is all that is necessary for salvation and is not taught in the RCC.
He baptized Jesus so that Jesus would be revealed to the world.
John 1:29-34
The next day he saw Jesus coming toward him, and said, “Behold, the Lamb of God, who takes away the sin of the world! 30 This is he of whom I said, ‘After me comes a man who ranks before me, because he was before me.’ I myself did not know him, but for this purpose I came baptizing with water, that he might be revealed to Israel.” And John bore witness: “I saw the Spirit descend from heaven like a dove, and it remained on him. I myself did not know him, but he who sent me to baptize with water said to me, ‘He on whom you see the Spirit descend and remain, this is he who baptizes with the Holy Spirit.’ And I have seen and have borne witness that this is the Son of God.”