The 3,000 people who responded to the gospel call in Acts 2 did not keep this gospel call at arms length. That would have been easier. It would have been easier to not have to be cut to the heart, to not get carried away, to not respond. But instead, these 3,000 internalized this gospel call and responded with their whole lives.
It wasn't that they found a new set of religious activities. It wasn't that they had found a religion that gave meaning to their old lives. No, they found new life.
So they lived a new life.