The Priesthood (Aaron and his sons) were clothing themselves, or putting on, with the colors that represent Jesus the Christ as our great High Priest (Blue), as the King of Kings (Purple), as our Savior (Red), and as the Son of God (White). We are instructed to put on the Lord Jesus Christ and make no provision for the flesh. Let's let's submit every area and aspect of our life to the Lord, so His nature, character, and attributes can't help but be observed by all.