"For Aaron's sons, make tunics and sashes. Also make them hats that are both dignified and beautiful. Place these [vestments] on Aaron and his sons. Then anoint them, and install them, sanctifying them to be priests to Me. Also make linen pants to cover their nakedness, reaching from their waists to their thighs. [All these vestments] must be worn by Aaron and his sons whenever they enter the Communion Tent or offer sacrifice on the altar, performing the divine service in the sanctuary; otherwise they will have committed a sin and they will die. This shall be a law for [Aaron] and his descendants after him for all time." (Exodus 28:40-43)
"They made the tunics for Aaron and his sons by weaving them out of fine linen. [They made] the linen turban, the fine linen hats, and the line pants, [all out of] twined linen. [They made] the belt, embroidered out of twined linen, and sky-blue, dark red and crimson wool." (Exodus 39:28-29)
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