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John Gill said it well, too:

many shall run to and fro, and knowledge shall be increased; that is, towards the end of the time appointed, many persons will be stirred up to inquire into these things delivered in this book, and will spare no pains or cost to get knowledge of them; will read and study the Scriptures, and meditate on them; compare one passage with another; spiritual things with spiritual, in order to obtain the mind of Christ; will peruse carefully the writings of such who have gone before them, who have attempted anything of this kind; and will go far and near to converse with persons that have any understanding of such things: and by such means, with the blessing of God upon them, the knowledge of this book of prophecy will be increased; and things will appear plainer the nearer the accomplishment of them is; and especially when accomplished, when prophecy and facts can be compared together: and not only this kind of knowledge, but knowledge of all spiritual things, of all evangelic truths and doctrines, will be abundantly enlarged at this time; and the earth will be filled and covered with it, as the sea with its waters; see Isa_11:9.