"Prophecy helps keep us up to date with God's plans and purposes. In the Old Testament prophets are called "seers"; they are people who "see". Prophetic men and women are in effect the eyes and ears of the church. They see regularly what others don't regularly see. They help convey vision and direction to the church because the sovereign Lord does nothing without revealing His plans to His servants, the prophets".
Greg Haslam - "Prophetic Preaching" in "Preach the Word!" (ed. Greg Haslam" - (2006) Sovereign World - (p428).