Exodus 28:39
"Weave Aaron's patterned tunic from fine linen cloth. Fashion the turban from this linen as well. Also make a sash, and decorate it with colorful embroidery.

Exodus 28:40
"For Aaron's sons, make tunics, sashes, and special head coverings that are glorious and beautiful.

Exodus 39:26
with bells and pomegranates alternating all around the hem. This robe was to be worn whenever the priest ministered before the LORD, just as the LORD had commanded Moses.

Exodus 39:28
The turban and the special head coverings were made of fine linen, and the undergarments were also made of finely woven linen.

Leviticus 6:10
In the morning, after the priest on duty has put on his official linen clothing and linen undergarments, he must clean out the ashes of the burnt offering and put them beside the altar.

Ezekiel 44:17
"When they enter the gateway to the inner courtyard, they must wear only linen clothing. They must wear no wool while on duty in the inner courtyard or in the Temple itself.