Just as Eve was taken out from Adam's body to be his intimate companion, so will Christ's (the second Adam) bride be taken out from His Body. Many believers are "worthy" of heaven but are not "worthy" of Christ. They did not deny themselves and pick up their crosses to follow Him. They were not filled with the Spirit when the Bridegroom came for them - either in death or when the event of the Rapture occurs. God does not change - He judges His house first. He will not choose an unfaithful sleeping "maiden" to be a Bride for His Son - these will be "left out/behind" (not lost) to be made ready "through Great Tribulation" to meet their Lord. The Bride however, has made herself ready and she is "worthy" to wear the "Fine" Linen. She will walk with Him in white, be given a new name and be seated next to Him. As believers, we are to watch, wait, be filled with the Spirit and be ready at all times. We are to pray that we might be counted "worthy" to escape the judgments that are coming upon this earth. God sees the hearts of all men and knows those who are completely His and He will choose His Bride - not to be assumed by us. Those who pretend to be His Bride but are not - are hypocrites.