Original Text
And after that there shall be still more unrighteousness than that which was first consummated on the earth; for I know the mysteries of the holy ones; for He, the Lord, has showed me and informed me, and I have read (them) in the heavenly tablets.
Simple English
After that, there will be even more wickedness than what has already happened on earth. I know the secrets of the holy ones because the Lord has shown and told me about them, and I have read them in the heavenly records.