Numbers 24:9-10

Like a lion, they lie waiting to attack; like a lioness, no one would be brave enough to wake them. Anyone who blesses you will be blessed, and anyone who curses you will be cursed.” Then Balak was angry with Balaam, and he pounded his fist. He said to Balaam, “I called you here to curse my enemies, but you have continued to bless them three times.