Revelation 15:6

These heavenly beings are magnificent creatures, robed in gold and light (a Hellenic conception, Dieterich, 38 f.) and linen (to denote their honourable and sacred office: so the scribe of judgment, Ezekiel 9:2, and the angel in Daniel 10:5; Daniel 12:6). Plutarch (de Iside, 3, 4) explains that the linen surplice was affected by Egyptian votaries of Isis for religious reasons; e.g., the bright smiling colour of flax, its freedom from lice, and the smooth, cleanly material it yielded.