I will not prove this now because of time constraints but immersion in two elements seems to be important to God and I believe he immerses all his creation in both. Those elements are water and fire. Each member of the Godhead baptized Israel in water and the last end of this people is going to be baptized in fire as silver is purified in fire. The Psalmist says there is water over God's physical universe and John says he will set the heavens and the earth on fire at the end of the millennium. Both fire and water are eternal and let me quote the last appeal of the scriptures.
Re 22:17 And the Spirit and the bride say, Come. And let him that heareth say, Come. And let him that is athirst come. And whosoever will, let him take the water of life freely.
This eventuality awaits national Israel and by extension all nations in a segment of time.
Mt 3:1 In those days came John the Baptist, preaching in the wilderness of Judaea,
2 And saying, Repent ye: for the kingdom of heaven is at hand.
3 For this is he that was spoken of by the prophet Esaias, saying, The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight.
4 And the same John had his raiment of camel s hair, and a leathern girdle about his loins; and his meat was locusts and wild honey.
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.
7 But when he saw many of the Pharisees and Sadducees come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come?
8 Bring forth therefore fruits meet for repentance:
9 And think not to say within yourselves, We have Abraham to [our] father: for I say unto you, that God is able of these stones to raise up children unto Abraham.
10 And now also the axe is laid unto the root of the trees: therefore every tree which bringeth not forth good fruit is hewn down, and cast into the fire.
11 I indeed baptize you with water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Ghost, and [with] fire:
12 Whose fan [is] in his hand, and he will throughly purge his floor, and gather his wheat into the garner; but he will burn up the chaff with unquenchable fire.