The reason the soul desired to enter these caverns was to reach the consummation of the love of God, which she had always been seeking; that is, to love God as purely and perfectly as he loves her in order to repay him by such love. The second gift she will receive there is the essential glory to which he predestined her from the day of his eternity. Thus she declares:  There you will show me what my soul has been seeking ~St John of the Cross, The Spiritual Canticle: Stanza 38