"By divine direction the tribe of Levi was set apart for the service of the sanctuary. In the earliest times every man was the priest of his own household. In the days of Abraham the priesthood was regarded as the birthright of the eldest son. Now, instead of the first-born of all Israel, the Lord accepted the tribe of Levi for the work of the sanctuary. By this signal honor He manifested His approval of their fidelity, both in adhering to His service and in executing His judgments when Israel apostatized in the worship of the golden calf. The priesthood, however, was restricted to the family of Aaron. Aaron and his sons alone were permitted to minister before the Lord; the rest of the tribe were entrusted with the charge of the tabernacle and its furniture, and they were to attend upon the priests in their ministration, but they were not to sacrifice, to burn incense, or to see the holy things till they were covered. PP 350.1"
"And I, behold, I have taken the Levites from among the children of Israel instead of all the firstborn that openeth the matrix among the children of Israel: therefore the Levites shall be mine;"
EGW explains the selection of the Levites based on the principle outlined in Numbers 3:12.
"stood was holy. So the priests were not to enter the sanctuary with shoes upon their feet. Particles of dust cleaving to them would desecrate the holy place. They were to leave their shoes in the court before entering the sanctuary, and also to wash both their hands and their feet before ministering in the tabernacle or at the altar of burnt offering. Thus was constantly taught the lesson that all defilement must be put away from those who would approach into the presence of God. PP 350.2"
"For Aaron and his sons shall wash their hands and their feet thereat:"
The EGW passage directly references and expands upon the practice of washing hands and feet before ministering, as described in Exodus 30:19. It explains the symbolic significance of this act.
"The garments of the high priest were of costly material and beautiful workmanship, befitting his exalted station. In addition to the linen dress of the common priest, he wore a robe of blue, also woven in one piece. Around the skirt it was ornamented with golden bells, and pomegranates of blue, purple, and scarlet. Outside of this was the ephod, a shorter garment of gold, blue, purple, scarlet, and white. It was confined by a girdle of the same colors, beautifully wrought. The ephod was sleeveless, and on its gold-embroidered shoulder pieces were set two onyx stones, bearing the names of the twelve tribes of Israel. PP 350.3"
"And these are the garments which they shall make; a breastplate, and an ephod, and a robe, and a broidered coat, a mitre, and a girdle: and they shall make holy garments for Aaron thy brother, and his sons, that he may minister unto me in the priest’s office."
The EGW passage provides a detailed description of the high priest's garments, directly alluding to the instructions given in Exodus 28:4 and surrounding verses. It elaborates on the materials, colors, and specific components of the garments.