Tim Keller and John Piper both lead very large churches. But what happens when they eventually leave their posts? It's a question that is facing many megachurches given that most were started by Baby Boomer leaders who are now entering their 60s.

Keller explains his church's 10-year plan to launch into four, and possibly eight, independent churches. This requires him to spend a great deal of time developing new leaders. Piper, on the other hand, shares tat his church has not yet discerned a plan for the future. They are engaged in a season of prayer to determine what to do.

However, since this video was filmed in April, Piper has announced his plans to transition from his role at Bethlehem Baptist in three years. He will step away from preaching and vision in June 2014 to give his attention to writing, speaking, mentoring, and teaching at Bethlehem College and Seminary.

Piper Talks with Carson, Keller About Succession Plans at Bethlehem from The Gospel Coalition on Vimeo.