Matthew Henry Commentary Numbers 22:36-41

"And when Balak heard that Balaam was come, he went out to meet him unto the City of Moab, which is on the border of the Arnon, which is in the utmost part of the border. And Balak said unto Balaam, Did I not earnestly send unto thee to call thee? wherefore camest thou not unto me? am I not able indeed to promote thee to honor? And Balaam said unto Balak, Lo, I am come unto thee: have I now any power at all to speak anything? the word that God putteth in my mouth, that shall I speak. And Balaam went with Balak, and they came unto Kiriath-huzoth. And Balak sacrificed oxen and sheep, and sent to Balaam, and to the princes that were with him. And it came to pass in the morning, that Balak took Balaam, and brought him up into the high places of Baal; and he saw from thence the utmost part of the people." — Numbers 22:36-41 (ASV)

Balak now has nothing to complain about, except that Balaam did not come sooner. Balaam tells Balak not to depend too much on him. He seems to speak with vexation, but is really as eager to please Balak as he had ever pretended to be to please God.

See how much we need to pray every day, Our Father which art in heaven, lead us not into temptation. Let us be vigilant over our own hearts, considering how far people may go in the knowledge of God, and yet fall short of Divine grace.