'Know the Truth' in the Bible

till I gat me to one of them that stood by, to know the truth, concerning all these things. So he told me, and made me understand the interpretation of these things.

Then I would know the truth of the fourth beast, which was diverse from all the others, exceeding dreadful, whose teeth were of iron, and his nails of brass; which devoured, brake in pieces, and stamped the residue with his feet;

I desired also to know the truth, as touching the ten horns that he had upon his head, and this other which came up afterward, before whose face there fell down three: which horn had eyes and a mouth that spake presumptuous things, and looked with a grimmer visage than his fellows.