From the linen colored k’laf/parchment on which the Torah scroll is written representing the linen garments and purity of the Priest, to the hair or sinew with which the panels of parchment are sewn together representing the intercessory nature of the priest in unity with Israel, to even the kosher quill pen with which the text is written which comes from a clean bird representing how Hashem want to cover us with His wings (Ps. 91:4) and desires to write upon our heart his Torah (Jer. 31:31)… everything represents the deep symbolism with which God instructed the High Priest to dress!