Inter-Varsity Press

Derek Tidball is Visiting Scholar at Spurgeon's College, London. Previously he served as Principal of London School of Theology, as pastor of two Baptist Churches, as a tutor at LST, and as Head of Mission at the Baptist Union. He is the author of numerous books including "Skilful Shepherds" (Apollos), "Builders and Fools", "Ministry by the book" (both IVP) and two volumes in the The Bible Speaks Today series. He is married to Dianne and they have a son, Richard.

Keith Warrington is Vice-Principal and Director of Doctoral Studies, Regents Theological College, West Malvern, Worcestershire. He is the author of a number of books including "Discovering the Holy Spirit in the New Testament" and "Pentecostal Theology: A Theology of Encounter".