To emphasize once again, from the lessons we have previously learned from the experience of God's working in history, and judging from the scriptural passages quoted before, the Second Advent will occur as at the First Coming, by the Messiah's birth in the flesh, born of a woman. Indeed, he comes as the Son of Man. God created Adam to be the origin of the ideal man and the ideal family on earth. Therefore, the Lord of the Second Advent, comes to complete the overall task of restoration and purpose of creation as the Third Adam. Therefore, he must come in the flesh, and become the origin of the ideal individual and the ideal family, and realize the Kingdom of Heaven on earth, which has been God's eternal ideal.
Clouds are vaporized water.
Regardless of how dirty water may be, when it evaporates into a cloud, it becomes purified. Likewise, clouds signify the men resurrected or reborn from fallen men, or in other words, the resurrected believers reborn from the sinful world. The metaphor that he will come on the clouds means he will come again among the saints that God has prepared. We have just covered the main topics of the Divine Principle, which was revealed by the Reverend Sun Myung Moon. The full content of the Divine Principle requires approximately a week to cover in lectures.