Easy. The Church is to be one, not many. It is in 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
Here Christ says his Church will not be destroyed.
“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
Here Christ says, and Paul reaffirms, that the Church will always teach the TRUTH.
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
Again, here Jesus assures us that He is always with us, to the very end.
So Christ says His Church will not be destroyed or fall away from him, that the Holy Spirit will guide the Church to always teach the Truth, and He will always be with us.
All in the clear words of Scripture.
The Church is much more than a collection of nice people who read a Bible and believe anything they want.
But your church is not one. And while it is ancient, it cannot prove itself to exist in the first century.
Here Christ says his Church will not be destroyed.
But there are two churches that span the latter days. One is true, and one is Jezebel. One is poor and persecuted, the other is rich, material, and drunk.
Here Christ says, and Paul reaffirms, that the Church will always teach the TRUTH.
But your church does not teach the truth. It has added to, and taken away from Torah, and has added to and taken from the words of the Master... the Church is the foundation and pillar of truth - The truth is Torah, from the beginning.
Again, here Jesus assures us that He is always with us, to the very end. [...] So Christ says His Church will not be destroyed or fall away from him, that the Holy Spirit will guide the Church to always teach the Truth, and He will always be with us.
You presuppose 'us', without any proof thereof.
The Church is much more than a collection of nice people who read a Bible and believe anything they want.
On that much we agree - The church of Laodicea (let the people decide) is not right. But that does not make your church right.