What is it going to take for the Bride of Christ to "make herself ready" (Rev. 19:7)

For close to 6,000 years God has been revealing His love to the Church, the Bride of Christ. Why does she still participate in sin? Can we not understand that sin is the most terrible thing in the whole universe? What has God kept in store for the last time to reveal to His bride so that she would make herself ready for His second appearing and cease from sin so that our Great High Priest can finish His work of cleansing the heavenly sanctuary? We must "look and live"... We must look upon HIm Whom our sins have pierced... within the veil. Behold the last great, awakening revelation of Jesus Christ