If you are a follower of Jesus, then you belong in church. Part of our salvation is that we are part of the Body of Christ, the church. A Christian cannot exist outside of that fact. There is no solitary Christian who goes it alone. Nothing can separate you from being part of God’s church. Even death cannot separate us from the church. We are part of the church through the ages united in Christ. We belong to the same church as the Apostles. If you have placed your faith in Christ, you become part of the family.
There was something more going on than the long wait to be free from Babylon. Israel was waiting for the coming of the Messiah. The Messiah would restore the People of God and God would rule over his people. The promise is the giving of a child.