According to Jewish scholar Jacob Milgrom, it was because of how it differentiated the priestly part of the community.7 Because both the priestly garments and the tabernacle weavings were a combination of wool and linen, it was prohibited for laypersons to dress in the same way. Another prohibited mixture had the same rationale. No one but the priests could blend together aromatic spices in the same combination that was used to make sacred anointing oil (Exod. 30:33).
