And he took up his parable, and said, “Rise up, Balak, and hear; hearken unto me, thou son of Zippor: God is not a man, that He should lie; neither the son of man, that He should repent: hath He said, and shall He not do or hath He spoken, and shall He not make it good?
“Behold, I have received commandment to bless: and He hath blessed; and I cannot reverse it.  He hath not beheld iniquity in Jacob, neither hath He seen perverseness in Israel: the LORD his God is with him, and the shout of a King is among them. God brought them out of Egypt; He hath as it were the strength of an unicorn.  Surely there is no enchantment against Jacob, neither is there any divination against Israel: according to this time it shall be said of Jacob and of Israel, ‘What hath God wrought!’  Behold, the people shall rise up as a great lion, and lift up himself as a young lion: he shall not lie down until he eat of the prey, and drink the blood of the slain.”
Numbers 23:18-24