Revelation 15:6

then the seven angels, who held the seven plagues, came out of the temple, cloathed in pure white linen, wearing upon their breasts girdles of gold.

Revelation 19:8

for she was permitted to be arrayed in fine linnen, clean and white: for the fine linnen represents the virtues of the saints."

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
then the seven angels, who held the seven plagues, came out of the temple, cloathed in pure white linen, wearing upon their breasts girdles of gold.
Revelation 19:8
for she was permitted to be arrayed in fine linnen, clean and white: for the fine linnen represents the virtues of the saints."