These are the animals which you shall eat: the ox, the sheep, and the goat,
Read Chapter 14
Ambrose of Milan
And therefore the animals that are clean according to the law have horns, for the law is spiritual. Those who can repel the enticements of this world through the Word of God and the observance of virtue seem to be protected by horns upon their heads, so to speak, as if by weapons. And with good reason the wonderful power of discourse that incites the good soldiers of Christ to battle, so that we may carry back the spoils from our enemy the devil, is called a horn [trumpet]. Therefore we are in a battle, and we perceive that many of us are captives in the camp of our enemy. Them we must deliver from a very heavy yoke of slavery.