Numbers 22:15-21 (King James Version)

 ¹⁵And Balak sent yet again princes, more, and more honourable than they.

 ¹⁶And they came to Balaam, and said to him, Thus saith Balak the son of Zippor, Let nothing, I pray thee, hinder thee from coming unto me:

 ¹⁷For I will promote thee unto very great honour, and I will do whatsoever thou sayest unto me: come therefore, I pray thee, curse me this people.

 ¹⁸And Balaam answered and said unto the servants of Balak, If Balak would give me his house full of silver and gold, I cannot go beyond the word of the LORD my God, to do less or more.

 ¹⁹Now therefore, I pray you, tarry ye also here this night, that I may know what the LORD will say unto me more.

 ²⁰And God came unto Balaam at night, and said unto him, If the men come to call thee, rise up, and go with them; but yet the word which I shall say unto thee, that shalt thou do.

 ²¹And Balaam rose up in the morning, and saddled his ass, and went with the princes of Moab.