Num 22:22-33 But God’s anger was kindled because he went, and the angel of the LORD took his stand in the way as his adversary. Now he was riding on the donkey, and his two servants were with him. And the donkey saw the angel of the LORD standing in the road, with a drawn sword in his hand. And the donkey turned aside out of the road and went into the field. And Balaam struck the donkey, to turn her into the road. Then the angel of the LORD stood in a narrow path between the vineyards, with a wall on either side. And when the donkey saw the angel of the LORD, she pushed against the wall and pressed Balaam’s foot against the wall. So he struck her again. Then the angel of the LORD went ahead and stood in a narrow place, where there was no way to turn either to the right or to the left. When the donkey saw the angel of the LORD, she lay down under Balaam. And Balaam’s anger was kindled, and he struck the donkey with his staff. Then the LORD opened the mouth of the donkey, and she said to Balaam, “What have I done to you, that you have struck me these three times?” And Balaam said to the donkey, “Because you have made a fool of me. I wish I had a sword in my hand, for then I would kill you.” And the donkey said to Balaam, “Am I not your donkey, on which you have ridden all your life long to this day? Is it my habit to treat you this way?” And he said, “No.” Then the LORD opened the eyes of Balaam, and he saw the angel of the LORD standing in the way, with his drawn sword in his hand. And he bowed down and fell on his face. And the angel of the LORD said to him, “Why have you struck your donkey these three times? Behold, I have come out to oppose you because your way is perverse before me. The donkey saw me and turned aside before me these three times. If she had not turned aside from me, surely just now I would have killed you and let her live.”
We must not think, that because God does not always by his providence restrain men from sin, therefore he approves of it, or that it is not hateful to him. The holy angels oppose sin, and perhaps are employed in preventing it more than we are aware. This angel was an adversary to Balaam, because Balaam counted him his adversary; those are really our best friends, and we ought so to reckon them, who stop our progress in sinful ways. Balaam has notice of God’s displeasure by the ass. It is common for those whose hearts are fully set in them to do evil, to push on violently, through the difficulties Providence lays in their way. The Lord opened the mouth of the ass. This was a great miracle wrought by the power of God. He who made man speak, could, when he pleased, make the ass to speak with man’s voice. The ass complained of Balaam’s cruelty. The righteous God does not allow the meanest or weakest to be abused; but they shall be able to speak in their own defence, or he will some way or other speak for them. Balaam at length has his eyes opened. God has many ways to bring down the hard and unhumbled heart. When our eyes are opened, we shall see the danger of sinful ways, and how much it was for our advantage to be crossed. Balaam seemed to relent; I have sinned; but it does not appear that he was sensible of this wickedness of his heart, or willing to own it. If he finds he cannot go forward, he will be content, since there is no remedy, to go back. Thus many leave their sins, only because their sins have left them. (Henry)
And God’s anger was kindled because he went,…. Though he had given him leave to go; but then it was upon condition that the princes called him to go with them, whereas he went without their call, and did not wait for it; and besides, he did not acquaint them, as he did not the messengers before, of what God had said, that he should not curse Israel, nor say anything contrary to this his will, which, had he told them, they would not have taken him with them; moreover, he went with an intention, with a good will to curse Israel, which must be displeasing to God, who knew his heart.(Gill)
“To the great disgrace of the prophet, the glory of the angel was first of all apparent to the ass… He had been boasting before this of extraordinary visions, and now what was visible to the eyes of a beast was invisible to him. Whence came this blindness, but from the avarice by which he had been so stupefied, that he preferred filthy lucre to the holy calling of God?” (Calvin.)