Numbers 24:9-10

9He bowed down [to rest], he lies down as a lion; And as a lioness, who dares to rouse him? Blessed [of God] is he who blesses you, And cursed [of God] is he who curses you.”

10Then Balak’s anger was kindled against Balaam, and he struck his hands together; and Balak said to Balaam, “I called you to curse my enemies, but behold, you have done nothing but bless them these three times.