The early church was established by Jesus Christ who is God.
the early church kept all things that Jesus commanded.
Jesus Christ set examples for us for our salvation.
So, we must obey them to receive salvation.
What was that? Sabbath, Passover, Pentecost, Veil regulation.

The name of the Church of God was given by Jesus.

Jesus blessed Peter, who recognized Christ who came as a human two thousand years ago, saying, 'I will build a church on your rock.'
This church is the orthodox church, that is, the early church.​
In other words, one of the biggest characteristics of the Orthodox Church that was differentiated from Judaism at that time is that it is a church that has received God who has come as a human being. And in this very church, not only Peter, but also the twelve disciples such as John, James, and, later, the Apostle Paul, joined and believed.
If so, what kind of truth was the early church that Peter attended keeping?

I was so surprised when I saw the name of the church that Jesus established in the Bible for the first time. It was the Church of God. At the time, the Church of God kept the Sabbath and the Passover of the New Covenant.

The Bible prophesied that the place to keep the 'seven feasts of the three times including the Sabbath and the Passover' holy is 'Zion that keeps the feasts', and God will be with us there.
Then, where is the place to keep the feasts of God?
The only church around the world that keeps the feasts of God recorded in the Bible is the Church of God established by Ahnsahnghong.
According to the teachings of Christ Ahnsahnghong, the Second Coming Christ, the Church of God observes all seven seasons, including the Sabbath, the anniversary of the Creator, the Passover, the Feast of Unleavened Bread, Resurrection Day, the Pentecost, the Feast of Trumpets, the Day of Atonement, and the Feast of Tabernacles.

Amen! the name of church that we can confirm through the Bible is only Church of God. In order to be saved, we must go to Church of God which keeps the Feasts of the New Covenant.