'Linen' in the Bible

And lifting up my eyes I saw the form of a man clothed in a linen robe, and round him there was a band of gold, of the best gold:

And I said to the man clothed in linen, who was over the waters of the river, How long will it be to the end of these wonders?

Then in my hearing the man clothed in linen, who was over the river, lifting up his right hand and his left hand to heaven, took an oath by him who is living for ever that it would be a time, times, and a half; and when the power of the crusher of the holy people comes to an end, all these things will be ended.