The ministry of angels is frequently at work, especially in the life of a believer.  Hebrews 4:14 says "Are they not all ministering spirits sent forth to minister for those who will inherit salvation?"  And as Dr. Billy Graham once said "angels are God's secret agents.  They are ministering servants, protecting, delivering, and sometimes guiding."  We'll here more about this as Pastor Jeff describes a certain angel found in Revelation chapter 10.