Numbers 24:13
'If Balak gave to me the fullness of his house full of silver and gold, I am not able to go beyond {the command of Yahweh} to do good or evil, from my heart; what Yahweh speaks, I will speak'?
Numbers 16:28
And Moses said, "In this you will know that Yahweh has sent me to do all these works; [it is] not from my heart.
Numbers 22:18
Balaam answered and said to the servants of Balak, "Even though Balak gives to me his house full of silver and gold, I am not able to go beyond {the command of Yahweh} my God to do a little or a lot.
Numbers 22:20
And God came to Balaam [at] night, and he said to him, "If the men have come to call you, get up [and] go with them; but only the word that I will speak to you, you will do."