Hairy goats
Peter Leithart makes a wonderful observation about Jacob, Esau and Joseph.
He says this:
Esau is a “hairy man” (sa’iyr), something we learn only when Jacob dresses himself in goat hair to approach his father (Genesis 27:11, 23). Jacob becomes a hairy one, subbing in for his brother. The only other use of the word in Genesis is in 37:31, where it describes the “kid” killed to fool into thinking that Joseph has died. Both passages involve substitution, and both involve deception of a father.