6. From the Book of Exodus
Have Aaron your brother brought to you from among the Israelites, along with his sons Nadab and Abihu, Eleazar and Ithamar, so they may serve Me as priests. Make sacred garments for your brother Aaron to give him dignity and honor. Tell all the skilled workers to whom I have given wisdom in such matters that they are to make garments for Aaron, for his consecration, so he may serve Me as priest. These are the garments they are to make: a breastpiece, an ephod, a robe, a woven tunic, a turban and a sash. They are to make these sacred garments for your brother Aaron and his sons, so they may serve Me as priests. Have them use gold, and blue, purple and scarlet yarn, and fine linen.
Ex 28, 1-5
6. Priestly Vestments
God the Father: The priest should wear royal vestments, because he is like a king to the faithful, with whom he deals according to My Will. I provide His dignity. His authority comes from Me. He represents mankind before My eyes, so he should be decently dressed in order to show Me respect when he approaches Me. He not only comes to the prayer in which he apologizes to Me for your sins, but he takes part in the Sacrifice of My Son and touches God Himself; he does not just dwell in God’s spiritual presence, as it was in the times of Moses. In addition, the priest represents Me and speaks on My behalf. He is the visible face of God, of His truth and His grace, for the faithful. The royal vestments were supposed to highlight the authority of the king over his subjects, over their life and death, and over their future fate; the authority that the king received from God. Yet, the priest is a ruler appointed by Me forever, not only for a certain time. He also has the authority to rule over the eternal life and death of souls, not only over their temporal life. (…)
The priest is My property and if he renounces his dignity, pretending that he does not belong to Me, but to the world, he has already been defeated in his heart and is a coward. By offering the priest daily clothes distinguishing him from all people on Earth, I singled him out in grace and showed to the world that he is no longer from the world, but belongs to the kingdom of My Spirit. And to touch him in any way is equivalent to touching the Holiness, which I am in him.
(…) the lack of priestly vestments and their negligence by priests is already a lack of faith, which I have announced to you while still stepping on the Earth in My Son.
Translated from: Orędzia o czci i kulcie Boga, Grzechynia 2018, p. 51-55