The only two churches in the Bible are the local church and the totality of Saints, living and dead.
But today the majority of churches and Christians are in name only. They draw near to God with the tongues but are far away in their hearts.
While the names very there is only two positions in the church: elders and deacons.
Is there a difference in the qualifications of elders and deacons? | Bible.org
Paul condemns denominationalism. It divides the Church;
1 Corinthians 1
A Church Divided Over Leaders
10 I appeal to you, brothers and sisters,a]">[
a] in the name of our Lord Jesus Christ, that all of you agree with one another in what you say and that there be no divisions among you, but that you be perfectly united in mind and thought. 11 My brothers and sisters, some from C

e’s household have informed me that there are quarrels among you. 12 What I mean is this: One of you says, “I follow Paul”; another, “I follow Apollos”; another, “I follow Cephasb]">[
b]”; still another, “I follow Christ.”
13 Is Christ divided? Was Paul crucified for you? Were you baptized in the name of Paul? 14 I thank God that I did not baptize any of you except Crispus and Gaius, 15 so no one can say that you were baptized in my name. 16 (Yes, I also baptized the household of Stephanas; beyond that, I don’t remember if I baptized anyone else.) 17 For Christ did not send me to baptize, but to preach the gospel—not with wisdom and eloquence, lest the cross of Christ be emptied of its power.
Within the church gifts of the Holy Spirit function to serve the Church.
1 Corinthians 12
The Kinds of Gifts
4 There are different kinds of gifts. But it is the same Holy Spirit Who gives them. 5 There are different kinds of work to be done for Him. But the work is for the same Lord. 6 There are different ways of doing His work. But it is the same God who uses all these ways in all people. 7 The Holy Spirit works in each person in one way or another for the good of all. 8 One person is given the gift of teaching words of wisdom. Another person is given the gift of teaching what he has learned and knows. These gifts are by the same Holy Spirit. 9 One person receives the gift of faith. Another person receives the gifts of healing. These gifts are given by the same Holy Spirit. 10 One person is given the gift of doing powerful works. Another person is given the gift of speaking God’s Word. Another person is given the gift of telling the difference between the Holy Spirit and false spirits. Another person is given the gift of speaking in special sounds. Another person is given the gift of telling what these special sounds mean. 11 But it is the same Holy Spirit, the Spirit of God, Who does all these things. He gives to each person as He wants to give.
Yet we have confusion about even the gifts.
Some elevate tongues and give them new prominence and meaning. But Paul says it is the least of the gifts. Is last in the list.
I've seen some God has strongly blesses with the gift of teaching. They inspire others in unbelievable ways.
One of the most misdefined gifts is the discernment of spirits. It does not mean one becomes a lie detector.
For those who do not value study, what do they do with. "Another person is given the gift of teaching what he has learned and knows." All you for hear from them is the Holy Spirit teaches you everything. Which is not true. He helps you in learning you are required to study.
Every Saint has at least one gift.
Many think they have a gift they do not.
While it is true that there is no fool like an old fool it is also true that age and experience are of great value and elders should be respected and listen to.
But neither should youth be discounted. They are the Elders of tomorrow.
In this time of apostasy we see the Church struggling. Revelation with the seven churches lays out what is going on and where it is headed. Yet we have so-called Christians denying the truth.
The church age is growing to a close. So we must be diligent in trying to find and witness to those remaining few that God can harvest.
Just look at Democrats in Congress. They're working hard to get Christianity out of every corner of the USA.
Such as Islam is working hard to wipe every Christian and Jew from the face of the earth.