Numbers 22:35

And the Angel of the Lord said unto Balaam, Go with the men; since there was no trace of real repentance in his heart, he should continue in his undertaking; but only the word that I shall speak unto thee, that thou shalt speak. This was to be distinctly understood and obediently followed by Balaam. So Balaam went with the princes of Balak, believing that he would still find ways and means to circumvent the will of the Lord and get the coveted money. He is a type of a blind and hardened sinner.