29- Else what shall they do which are baptized (purified) for the dead, if the dead rise not at all? why are they then baptized for the dead?
As the Law proves in the Book of Numbers all of chapter 19. And 31 from 19 to 24 shows us that those who baptized (purified) with water because of contact with the dead, because dead is the worst squalor, is the salary of sin.
Ezekiel 36-25 to 27. Prophetizes about baptism of water and of spirit.
25- Then will I sprinkle clean water upon you, and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you.
26- A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh.
27- And I will put my spirit within you, and cause you to walk in my statutes, and

ye shall keep my judgments, and do [them].
With John Baptist, the son of the high priest Zechariah, who was the Law and the prophets, and fulfilled his part of the prophecy. Matt. 3:
5- Then went out to him Jerusalem, and all Judaea, and all the region round about Jordan,
6- And were baptized of him in Jordan, confessing their sins.
By Law they had to put tap water in a vase and sprinkle over the filthy (in book number 19.17). This is why he went straight to the Jordan River and baptized.
Everywhere in the Bible that has baptism with water or with spirit, has a foot note that says: with is = to in.
This is a fake sentence of the immersionists, and the older Churches, they don´t agree with immersion, but they don´t fight it because is convenient. This also justifies the Trinity, who says that the Father and the Son are one.