And the priest shall put on his linen garment, and his linen trousers shall he put upon his flesh, and take up the ashes which the fire has consumed with the burnt offering on the altar, and he shall put them beside the altar.
Read Chapter 6
Bede
AD 735
The priest who offers the holocaust is the Lord who is himself accustomed to kindle in us the fire of his charity and through it to make the sacrifices of our good actions acceptable to himself. And he is clothed in linen garments when he does these things because, in order that he may excite us to works of virtue, he sets before us the examples of his own incarnation, passion and death, which can be signified by linen, as we have frequently said.