1. There were no buildings called "churches".
2. "Preaching" was synonymous with dialogue, not Greco-Roman, "Sage on the Stage Sermons". EVERY member of the family was welcomed as an active "joint of supply".
3. Overseers/Bishops/Elders didn't "control the show" and were not necessarily synonymous with the "five-fold" equipping ministry of "pastor".
4. The role of "pastor" (Mentioned only once in the entire New Testament, where it is plural and listed 4th among 5 equipping ministries...and also LEFT OUT of the list in 1 Corinthians 12) looked nothing like what it does in most churches today. The Bible promises no one the "one-man show" Grace that is needed to fulfill what is expected of Post-Constantinian, 21st Century "pastors". The modern-day role simply can't be defended Biblically or with First Century History.
5. There were no altars or altar calls.
6. There was no "sinner's prayer". The church multiplied through God's Love functioning through His people and by the organic work of the Holy Spirit awakening people to the Truth and joining them through meaningful, family relationships.
7. Denominationalism ("I'm of Peter!", "I'm of Paul!", etc) was synonymous with CARNALITY. This obviously included "Non-Denominational" Denominations.