The Church and the Bride are not the same. Not all believers who are going to heaven have denied themselves and picked up their crosses to follow Jesus - they are not His disciples and therefore "not worthy" of Him. He is not their first love. (read letters to the seven churches in revelation 2,3) Some are not faithful servants. Some have not remained in Him. Some have not kept themselves unspotted from the world, unwrinkled and blameless. Some have not kept the faith and endured until the end. Some refused to walk the narrow path.
 
The Bride has made herself "ready", is filled with the Spirit - she (they) have listened to what the Spirit is saying to the churches and obeyed. Since the beginning of the Church believers have become "worthy" of Christ and they are His Bride. The Rapture is an event at the End of the Church Age to rescue Christ's Bride. Those left behind are no longer the Church and must now pay the price (5 foolish virgins) for the oil (Spirit). Their faith must be tested through Great Tribulation. The Bride will be taken out of the Church like Eve was taken out from Adam's body - Jesus is the second Adam.