I ask then again, is Jesus unnecessary for regeneration? He was not there in the OT and the HS had not yet been given. Btw, you have to make that up as NO WHERE in the scripture does it say that those men, lots and lots of them, were regenerated before they could see God. Where does the scripture say that he set those who sought him apart. And stop quoting the NT. We are talking OT and you need to prove your point from those scriptures.
As far as God is concerned, Christ was slain from the foundation Rev 13:8
8 And all that dwell upon the earth shall worship him, whose names are not written in the book of life of
the Lamb slain from the foundation of the world.
And The Spirit wasnt given historically as on the day of pentecost, but He regenerated individuals and gave them Faith in the OT. Faith is the fruit of the Spirit.
The prophets had Christ in them, they were born again 1 Pet 1:11
Searching what, or what manner of time
the Spirit of Christ which was in them did signify, when it testified beforehand the sufferings of
Christ, and the glory that should follow.
The Spirit of Christ is spoken of in the NT Rom 8:9
But ye are not in the flesh, but in the
Spirit, if so be that the
Spirit of God dwell in you. Now if any man have not
the Spirit of Christ, he is none of his.
The Spirit of Christ and the Holy Spirit are the same.
Zacharias tecnically an OT Saint because Christ had not died yet, was filled with the Holy Ghost Lk 1:67
And his father
Zacharias was filled with the Holy Ghost, and prophesied, saying,
Now how was this so being as you say, the Holy Ghost had not yet been given ?
Man naturally doesnt seek after God, in fact doesnt understand God, the True God Rom 3:11
11 There is
none that understandeth, there is
none that seeketh after God.