this It wasnt long ago that I wrote a response to critics claiming that Rick Warren endorses Chrislam. Start by marking The Purpose Driven Life: What on Earth Am I Here for. Is has brought to completion the invitation Piper extended to Warren to. Desiring God Ministries has posted John Pipers long awaited interview with Rick Warren. as Want to Read:Creating the Perfect Lifestyle (Influenced by: Tony Robbins, Oprah Winfrey, Jesus, Jack Canfield, CS Lewis, Rick Warren, The Bible, Anthony Robbins, Oprah Book 1! Y frustration then remains my frustration now, namely.