Ask them if they are there to share the good news with you.
Then ask them to read you Galatians 1:8, 9 because the good news is what's important to a follower of Christ. The apostle Paul says this is very serious.
Tell them you know about their literature and how it says announcing Jehovah's Kingdom, but you are really interested in the Good News of the Bible not what some magazine says. How is this the good news of the Bible that Paul talked about?
Ask them if they can tell you what exactly are the good news they preach.
Then could they show you from their Bible where it says what they said.
And you open your Bible to 1 Corinthians 15:1-8. How does that match with what they preach, because if not, they are teaching another good news, and if so, then they stand condemned as Galatians 1:7 says.
Go back to Galatians 1 and now read them verses 6 and 7.
So if they preach another good news they really have deserted God, as verse 6 says.
https://bible.org/article/what-gospel
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