Revelation 15:6

and the seven angels with the seven plagues came out of the temple. They were clothed in clean, glistening linen and had gold belts around their breasts.

Revelation 19:8

She has been permitted to wear clean, glistening linen, for linen represents the upright deeds of God's people."

Treasury of Scripture Knowledge

Summary

Also the Levites which were the singers, all of them of Asaph, of Heman, of Jeduthun, with their sons and their brethren, being arrayed in white linen, having cymbals and psalteries and harps, stood at the east end of the altar, and with them an hundred and twenty priests sounding with trumpets:)

Bible References

Arrayed

Revelation 15:6
and the seven angels with the seven plagues came out of the temple. They were clothed in clean, glistening linen and had gold belts around their breasts.
Revelation 19:8
She has been permitted to wear clean, glistening linen, for linen represents the upright deeds of God's people."