Was the "church" started at the YHvH commanded or Did the "church" exist earlier ? Using the LXX as a guide we see that the Ekklesia
A study of the word "church", in the Koine Greek : Ekklesia. shalom b'SHEM Yah'shua HaMashiach Adonai
Feast day of Shavuot (pentecost) as some say ?
is first used in Deuteronomy 4:10
NAsbU Deuteronomy 4:10 "Remember the day you stood before the LORD your God Also see : Deu 4:10, Deu 9:10, Deu 18:16, Deu 23:3, Deu 23:4, Deu 23:9, Deu 31:30,
at Horeb, when the LORD said to me, 'Assemble the people to Me, that I may let
them hear My words so they may learn to fear Me all the days they live on
the earth, and that they may teach their children.'
Jos 9:2, Jda 20.2, Jda 21:5, Jda 21:8, Jdg 20:2 Jdg 21:5, Jdg 21:8, 1 Sa 17:47,
1 Sa 19:20, 1 Ki 8:14, 1 Ki 8:22, 1 Ki 8:55, 1 Ki 8:65, 1 Ch 13:2, 1 Ch 13:4, 1 Ch 28:2,
1 Ch 28:8
Was the "church" started at the YHvH commanded
Did the "church" exist earlier ?
Using the LXX as a guide we see that the Ekklesia
I would have to do a lot more reading up on it to comment more thoroughly. Several things do come to mind, though. While the LLX is a translation from the original language that renders that word (that you reference, Ekklesia), I would think that one would want to go to the original language for a more thorough understanding of what was being said originally.
Now, for the New Testament, it was written in Greek, so that would be legitimate. For the Old Testament, I would want to hear how some of those language scholars compare the original language to the Greek version. And then, one would want to get into things like context and to whom it was written and so on.
The other initial thought that I had was that this would tend to mix up the distinction between the Jews and the Church, as the Bible speaks to these different groups and in different ways. If the Jews are the Church and the Church is the equivalent (or maybe a superset of the Jews) — then that would seem to play into Replacement Theology, in that the Church has assumed all the promises of God, which were given to the Jews (i.e., national Israel) and Israel has forfeited their rights and/or promises (to the Church).
Anyway, these are not really developed thoughts but only initial ones and I would have to go further into it and see where it leads. If it leads to the wrong places, then there would definitely be something wrong with it.
That remains to be seen...