Numbers 24:13
‘Even if Balak would give me his house full of silver and gold, I could not go beyond the command of the Lord, to do either good or bad of my own accord. What the Lord speaks, that I will speak?’
Numbers 16:28
Then Moses said, “By this you shall know that the Lord has sent me to do all these works; for I do not act of my own accord.
Numbers 22:18
Balaam answered the servants of Balak, “Even if Balak were to give me his house full of silver and gold, I could not do anything, either small or great, contrary to the command of the Lord my God.
Numbers 22:20
God came to Balaam at night and said to him, “If the men have come to call you, get up and go with them, but you shall still do only what I tell you.”