Exodus 28:42-43 "Make linen undergarments as a covering for the body, reaching from the waist to the thigh. (The Lord instructs Moses to make the priestly garments out of a particular material. While the linen over Aaron's head is a reminder that the Lord has declared his thoughts holy and pure, the linen of his undergarments, his underwear, is also to show us a particular truth, that none of the perspiration that might be generated from carrying out his priestly duties is to remain on his body. Since linen will let his skin breath, it allows the air to dry any sweat he might generate. Just as linen on Aaron's head reminds him that he is to mentally walk in a cool focus on the Lord, controlling his passions and thoughts, worn next to the body, linen also reminds him that he is to physically walk in cool and circumspect actions, controlling all his physical passions and bodily lusts.) Aaron and his sons must wear them whenever they enter the tent of meeting or approach the altar to minister in the Holy Place, so that they will not incur guilt and die." (The Lord mercifully tells us through these instructions that He has made provision for us to approach Him, that we can do nothing to make that possible to to make ourselves acceptable, that He has, instead, proclaimed His righteousness over us, that we will not incur the guilt that comes with our sin nature, and that we live in His presence, pure and holy.)
