Simplify the following text for a Grade 10 native English-speaking person.
Original: John Charles Hagee ( born April 12 , 1940 ) is an American founder and senior pastor of CornerStone Church in San Antonio , Texas , a non-denominational charismatic church with more than 19,000 active members .
Simplified: John Charles Hagee ( born April 12 , 1940 ) is the founder and senior pastor of Cornerstone Church in San Antonio , Texas , a church with more than 19,000 members .