Ezekiel 44:17-18

The Zadokite priests would need to wear linen, not wool, garments when they served the Lord in the temple sanctuary and the inner gates and court (cf. Exodus 28:42; Leviticus 16:4; Revelation 19:8). This included linen turbans and undergarments. No fabric that caused them to sweat would be acceptable because perspiration would make them wet, and dry skin stays cleaner than sweaty skin. Wool may have been an unacceptable material too because it is a product of animals, whereas linen comes from plants. [Note: Wevers, p. 321.]