What makes you think the very early church had the New Testament verses you have. Those verses were written to saved individuals explaining what happens after they were baptized. The requirement the bible teaches is necessary is this and Philip explained Isaiah not those verses you listed.answer? Col 2:12...the person taught by a gospel preacher will teach the sinner that God is going to do something for the penitent person. It is refered to as what God did for Jesus. Rom 6:3-4 also informs one that you are being moved INTO Christ. We all know what that means. New creature in Christ 2Cor 5:17. This why Paul submitted to Annanias command in Act 22:16 even after prayinng for three days. He knew he was still in his sins until he was worked on by God in immersion in the name of Jesus. A Baptist on the other hand doers not even believe it essential to be immersed. I guess a Baptist church is not essential??? It was nt bought by blood we all know that. Jesus never even told anyone to tell others of it. Now that is a very important point my friends. Notice, if it is important, then Paul or other Apostle would insist upon it being commited to others so they could teach it. 2Tim 2:2 says this. The things they had heard Paul were to be taught to others so they could teach others. Kinda like what paul said about the Lords Supper in 1Cor 11:23... he received it from the Lord and he taught them. Ask yourself, where did the Baptist church come from if not from Jesus down to any of the apostles? Why is it being commited to people as if it has Jesus name associated with it. People on TV tell me that it does not matter which church you are in. Well I guess that is true if YOU ARE NOT GOING TO BE IN THE TRUE ONE> All the others are pretty much the same. Man Made is not really a matter to argue over. They are all worth about the same. Brian Edwaeds said it best. "absolutely not essential"
36 And as they went on their way, they came unto a certain water: and the eunuch said, See, here is water; what doth hinder me to be baptized?
37 And Philip said, If thou believest with all thine heart, thou mayest. And he answered and said, I believe that Jesus Christ is the Son of God.
If it was good enough to save the eunuch it should be good enough for anyone else. That may have been the reason God put it in the bible.