It wasn't his grandmother or a maiden aunt who provided Joseph with the coat of many colors--it was his father! [Egad!] A parallel, or prophetic illustration, of how Jesus came "in a body prepared", Heb10:5, to offer salvation to all colors and races of men. Just as that Joseph in Egypt was a type of saviour to his people, in providing them with bread, so Jesus came in his own time as the "true bread", Jn6:35.
The nakedness of the flesh is a physical reality for us to compare with spiritual nakedness. Adam & Eve got their eyes opened (fig. of speech) after they'd eaten from the Tree, and now we do the same when we become aware of the truth of God's Word. Initially they dressed in fig leaves (covering from the fig tree), but the LORD provided coats of animal skins -- a figure of the spiritual Robe which comes from the Lamb of God.
Are you dressed to go to heaven? Is the Garment of Praise a fit?
Warriors wear the Armor of God, and a smile that will not quit.
Some say you'll go there naked, just the way you came to earth...
But when I get that picture, I know why heaven's filled with mirth!
This rhyme stresses the comparison between literal and figurative garments, because teachers use examples and analogy to explain new subjects. Teachers who deny the allegories fail to recognize this tremendous race card, in the comparison of the coat of many colors with Jesus' body. Salvation is for any whosoever, no matter the color, and to be "clothed upon" with a spiritual garment is more for the long-haul than the 'covering' of the body.
Dux allows: "It is the glory of God to conceal a thing: but the honour of kings is to search out the matter". Pr25:2