​​Windell often talks about his own experiences in order to relate real life applications from Scripture. He worked in the oil field industry, in chemical process manufacturing, and in public education as a teacher and administrator.

Pastor Windell holds a Master of Divinity with Biblical Languages from Southwestern Seminary in Fort Worth; A Master of Science in Education from University of Houston: Clear Lake; and a Doctorate in Education from Lamar University. Doctor Gill is currently writing a book called "Kindi and the Preacher: A Story About Why Things Happen," to be published December 2018.

Windell is married to Cindey and they share a blended family of six adult children and three grandchildren.