Numbers 22:38

Balaam said to Balak , Behold , I have come to you! Have I now any power of my own to speak anything ? The word that God puts in my mouth , that must I speak .

“Well, I have come to you now,” Balaam replied. “But I can`t say whatever I please. I must speak only what God puts in my mouth.”

And Balaam said unto Balak, Lo, I am come unto thee: have I now any power at all to say any thing? the word that God putteth in my mouth, that shall I speak.