Read Matthew 23
The Pharisees would go to great lengths to make a convert and then heap laws and rules on top of them so as to suck the life out of life.
We reach people with these words: Repent and believe the good news. Yes, people must turn away from the ways of the world—from evil—and believe in and embrace the ways of the Lord.
The Pharisees stuck to their model. New converts were just people that could be subjugated to their authority.
We receive new believers as brothers and sisters in Christ.