Philadelphia shines brightly against a backdrop of dark and dismal failure. The unqualified commendation of this church after so much correction and condemnation comes as a striking and refreshing surprise. It does not follow the pattern of past failure. As is so often the case, when God's grace blows afresh on glowing embers it is impossible to predict how high these glorious flames will rise. David was sent on a simple earned of delivering bread and cheese to his brothers in 1 Samuel 17 but this led to victory against Goliath and the path to the throne. Saul headed down the road to Damascus breathing out threats and murder but ended his journey preaching Christ as Saviour.
The key to the success of Philadelphia lay in their likeness to Christ. They kept His word and honoured His name; a path of truth and holiness (3:7). When the door was opened they were ready and waiting to go through that door.
The door was undoubtedly one to mission and ministry, service and success in evangelism. As with all service, which can at times be onerous, involving sacrifice and commitment, service was the direction and not the ultimate destiny. The end point of this journey, opened by David's anointed with the keys was the heavenly Jerusalem and God's eternal presence. They were to become pillars in the place of holiness.