The Dictionary.com definition for "centrifuge" offers this: "An apparatus that rotates at high speed and by centrifugal force separates substances of different densities, as milk and cream."

It was a strange name, in the late 1970s, for a Southern Baptist Convention youth leadership project. But there was logic to it, according to the man behind the idea -- my brother Don Mattingly.

Centrifuge camps "would spin kids out into their futures, that's what Don always said. Out into ministries. Out into careers they wouldn't have thought of before. Out into projects back home, helping people," said Joe Palmer, the second Centrifuge leader. "It's not all playing volleyball, basketball and games. … They're learning about the rest of their lives."

For my older brother -- who died on March 18 -- the centrifuge of change in young lives was a major theme during his decades as a leader on the national SBC staff, at Baylor University and in countless youth-education events across America.

As the world whirled faster and faster, Don argued that religious leaders needed to create ministries that could spin young people in positive ways, helping them discover what mattered in their hearts, minds and souls.

Centrifuge began in 1979 in Glorieta, New Mexico, quickly attracting flocks of campers, with many Bible studies held in stairwells due to lack of space. This summer, during a "Fuge" (the nickname that stuck) somewhere in America, the network will register the 2 millionth participant in these unique camps.

At the heart of my brother's vision was a track system of classes and forums in which teens heard young leaders -- often seminary or graduate students -- address a variety of potential vocations. Fuge camps still offer tracks on sports, "STEM" careers, sign language, drama, "Random acts of service," music, "spiritual gifts" and more. "MFuge" camps cover work in local, national and global missions.

This was one of my brother's big ideas, as he planned and worked, while earning a religious education doctorate along the way: Young people needed to know that God can call them to work in pulpits or in classrooms, in missions or in coaching, in arts or hard sciences. The church should help them consider their options.