Rev 5:11. Μυριάδες μυριάδων καὶ χιλιάδες χιλιάδων) μυριὰς is ten thousand; μυριάδες (if only you understand δύο, as ch. Rev 12:14, καιροὺς, that is, δύο) are twenty thousand. Thence myriads of myriads are 200,000,000; and so moreover thousands of thousands, 2,000,000. The lesser number added to the greater forbids both of them from being taken too indefinitely.