David had learnt to use his sling to devastating effect - so much so that he only needed one of the stones in his sling to slay Goliath, and turn a day of devastation for Israel into a day of victory and joy. In this programme Peter talks about some of the Goliaths that people can face today and of the “stones” God has given us to use in our “sling”, so that we can slay them and enter into the joy of God’s victory in our lives - vital keys for effective living.