A few weeks ago I talked with an elderly lady from my church and she expressed her concern about the worship in our services. She asked me what happened to the old and meaningful songs and why we don't sing them anymore. She was obviously hurt, so I tried to kindly explain to her that we had to sacrifice the songs of her youth in order to be relevant to the young people today.

Tim Keller is the Senior Pastor of Redeemer Presbyterian Church in downtown New York City. Undoubtly, he is one of the important Christian leaders of the 21st century. His pioneer thinking in urban church planting as well as in the missional church movement will be remembered and valued in the years to come. Keller's new apologetic book "