What I mean is not important. I quote the Word of God from Scripture.
“And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it.” Mat 6:18
“I have yet many things to say unto you, but ye cannot bear them now. Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come.” John 16:12-13
“But if I tarry long, that thou mayest know how thou oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and foundation of the truth.” 1Tim 3:15
So what I mean is just what God tells us through Scripture. Adding nothing, confident in Christ’s promise that the Church will always teach the Truth.
Christianity is not Messiah's ecclesia
You keep repeating that but that is not what Scripture says. (And the Rock in Mat 6:18 is Peter - In Aramaic, the language Jesus spoke, Simon’s new name was Kepha (which means a massive rock). Because of gender in the Greek Language, this was translated into Greek as Petros (John 1:42) and into English as Peter. But those language nuances change nothing. Christ gave Peter the "keys of the kingdom" (Matt. 16:19) and promised that Peter’s decisions would be binding in heaven.)
2 You shall not add to the word which I command you, nor take from it, that you may keep the commandments of the LORD your God which I command you.
I’m not sure what you think this means. What we know is that it does not mean that God would not give more revelation to man after Deuteronomy was written. The Bible would then have only five books.
it was Christendom who chose a different path for conveniences sake in order to please pagans & add their body count to its membership
Not convenience. Just following Christ’s command. What part of Christ’s command to “go and make disciples of all nations” is not clear? All nations include a few pagans, even today.
Then Jesus came to them and said, "All authority in heaven and on earth has been given to me. Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age." Mat 28:18-20
You mention context. You cannot ignore the parts of Scripture with which you disagree. That is what Luther tried to do with the Epistle of James.
Fortunately, we have Christ’s promise that heresies will never prevail against the Church. They will arise, endure sometimes for centuries, like Protestantism or Mormonism, but we can be confident in Christ’s promise that the Church will always teach the Truth.
Yah’shua told us what Truth is in his prayer for his disciples
John 17:17 Set them apart for holiness by means of the truth — your word is truth
Yah'shua is speaking the only one “word” of YHVH at the time and it is called the Tanakh, Torah & Prophets. If one seeks truth, they must first seek YHVH’s guidance to help them find it in the ONLY word Yah’shua, the disciples & the Apostles had. Since all modern religious doctrines stem from Christendom in some form or another teach that Torah is only for Jews; how can they justify their claim to have the one and only truth?