Num 23:22

“This animal is called the unicorn, but I cannot say that I have seen him. But I have seen four brazen figures of him set up in the four-towered palace of the King of Ethiopia. From these figures I have been able to draw him as you see. They speak of him as a terrible beast and quite invincible, and say that all his strength lies in his horn. When he finds himself pursued by many hunters and on the point of being caught, he springs up to the top of some precipice whence he throws himself down and in the descent turns a somersault so that the horn sustains all the shock of the fall, and he escapes unhurt. And scripture in like manner speaks concerning him, saying, Save me from the mouth of lions, and my humility from the horns of unicorns. And again: And he that is beloved as the son of unicorns; and again in the blessings of Balaam wherewith he blessed Israel, he says for the second time: God so led him out of Egypt even as the glory of the unicorn; thus bearing complete testimony to the strength, audacity, and glory of the animal.”