"There are many aggadoth, but this is its simple meaning: A man says to his son, May you be like Avraham. And so is every instance of [the words] 'shall be blessed with you' in Scripture. And the following [text] proves this (below 48:20): 'With you, Israel shall bless, saying: May G-d make you like Ephraim and like Menashe.'" - [from Sifrei, Naso 18]
WIKIPEDIA: According to the Bible, Galilee was named by the Israelites and was the tribal region of Naphthali and Dan, at times overlapping the Tribe of Asher's land.
