This happened in a church. Check what happened

Pastor preached about tithing in church today, and after sermon, he asked all salary earners (private and public) to stand.

To my utmost perplexity, he (the Pastor) directed the Secretary to start writing their NAMES and their MONTHLY SALARIES respectively.

Will he start coercing them to pay tithes to him personally based on their monthly salaries or what? Is it compulsory for a Pastor to know his members' salaries? What does he want to do with it?
These are some of the questions that ran through my mind in church then. Till this moment, I seem not to know his intention until next week. I wonder what churches are turning to these days.

Does anyone have an idea of what he will likely do with their names and monthly salaries?