Deuteronomy 33:17-18

His glory {is like} the firstling of his bullock, and his horns {are like} the horns of unicorns: with them he shall push the people together to the ends of the earth: and they {are} the ten thousands of Ephraim, and they {are} the thousands of Manasseh. {unicorns: Heb. an unicorn} And of Zebulun he said, Rejoice, Zebulun, in thy going out; and, Issachar, in thy tents.