What made the early church effected is that they had a singleness of mind that was lead by the Holy Spirit.

We especially see this in the apostle Paul.

When we allow the Holy Spirit to lead us, and our focus is on pleasing God first, and foremost.

You will find that you can get to know the Lord Jesus better, the more the flesh dies.

This is what made the early church spread the Gospel so effectively.

The Holy Spirit used their selfless lives, to focus on being, witnesses for the Messiah.