Our Complete Priest (Hebrews 9:24-28)

One of the frustrating things about Christianity is that we do not have a tangible king. This means that we cannot simply knock on a door and see a king at work. We are a people who are to walk by faith with our eyes peering to the heavens as we sojourn on this earth. How can we be assured that our Lord is walking with us? How can we be assured that we really do have a priest who continues to minister on our behalf?