John Piper on the Cost of the Great Commission

"The Great Commission is not child's play. It is costly. Very costly. The coddled Western world will sooner or later give way to great affliction. And when it does, whose vision of God will hold? Where are Christians being prepared for great global sorrows? Where is the Christian mind and soul being prepared for the horrors to come? Christians in the West are weakened by wimpy worldviews. And wimpy worldviews make wimpy Christians. God is weightless in our lives. He is not terrifyingly magnificent. His sovereignity is secondary (at best) to His sensitivity".

John Piper - "Spectacular Sins and Their Global Purpose in the Glory of Christ" - Crossway Books (2008) - (p13).