Not the first question Jesus asked - but the one that made it personal.What did he mean by this was not revealed by flesh and Blood?What did he mean by the Rock on which to build his church?What did he mean by the Keys to the Kingdom?What did he mean by things bound and loosed on earth and in heaven?Luke Ridgwell explains all and asks us to consider ourselves as Kingdom bringers in the light of it. (Matthew 16:13-20)