천성경

Cheonseonggyeong is the bible of heaven. It is the bible of heaven and earth.
[2008.6.16-Cheonjeonggung]

Who will keep the heavenly scriptures?
[2009.3.27 - Cheonhwagung (The 50th True Parents' Day)]

Cheonseonggyeong is a book that must be read in order to know history, the universe, and religion. We Unificationists do not know this. You don't know how far apart everything is.
.... The nucleus of the world scriptures is the Cheonseonggyeong. Here is the secret of the secret storage of heaven and earth. There is only one key to the warehouse.
[2009.4.27-Cheonjeonggung]

The vast content of Cheonseonggyeong was also spoken 340 years ago, and the longest sermon at that time was 17 hours and 47 minutes. The audience in the room couldn't understand what he was saying. However, it is recorded as it is in the heavenly scriptures. It's because I don't know because my head is lacking.
It wasn’t until two years ago that the teacher started writing and reading the manuscript. Because they are such precious historical records. The Words of the Peace Creed is a collection of sermons, not a collection of manuscripts.
[2009.5.27-Cheonjeongwon]

...Those words are in the "Cheonseonggyeong" that I have been reading until now, but they have not been altered. It's just the way it is. I'm amazed at how theoretical it is. 'Hey, who did it with the top and bottom aligned like this?' This is it. That's what heaven did. The owner is the sky, not me. all right?
It was the first textbook the heavenly parents had to teach mankind. no one knows...
[2010.7.10-Cheongpyeong Heaven and Earth Training Center (Princi Body Theory Completion Ceremony)]