Visit a Southern Baptist Church or Fundamentalist Baptist Church in the USA and talk to people there.
"Many churches operate under Landmark doctrine and probably don’t realize it. That’s the way it was when I came to West Main Baptist. Here’s the test: does your church make somebody from another denomination get rebaptized in order to join your church, regardless of the nature of their first baptism? If so, your church is most likely practicing Landmark doctrine. This idea is to not accept what is called
alien immersion (
ie, being baptized under a denomination other than Baptist) and stems from the belief that only baptisms done in a Baptist church are valid because the Baptist church is the only valid church. Therefore, many Baptist churches are rebaptizing people. They might not realize the theology behind the practice but continue it out of tradition. "
The Problem of Rebaptism in SBC Churches
When I was in the USAF, I had to be rebaptised several times otherwise, the members of the Church would treat me with hate.