"Worth Keeping is more than worth just reading. I urge church and missional leaders to reflect on the research and absorb the principles contained in this important volume. I am convinced if we put into practice its recommendations we will see more effective missionaries who feel valued as servants of the living God. Worth Keeping should be required reading for all mission leaders and local church mission teams." - Geoff Tunnicliffe, International Director, World Evangelical Alliance, Canada This book was published in partnership with the World Evangelical Alliance.