Yes, there certainly are many obstacles to urban church planting. The challenge of refraining from insisting on suburban models for urban settings, the soaring cost of living expenses in global urban settings, the challenges inherent in diverse over homogenous contexts, the continual shifting of people moving in and out of cities, the multiplicity of global religions and worldviews- these things can sometimes seem formidable. However, God, who loves cities, and the promise of Kingdom come are truly worth the struggle. Our urban church planting work will be more effective if it is intentional about being both responsive to what is going on around us and in the world and proactive to the possibilities God has placed before us. It is Linda and Michael's hope that this book will help its readers become more willing to experiment and more willing to be hopeful about the possibility for starting thousands and thousands of vibrant urban churches.