As surprising as it might be for you and I to hear a donkey speak, Balaam seems to have taken it in his stride, for he answered his donkey, as though this were a perfectly ordinary part of his day. It is actually more astonishing that Balaam should have answered in the way he did!
Jesus said, Blessed are the pure in heart, for they will see God. But Balaam’s pride was in his way, his confidence that he could manipulate Almighty God into cooperating with Balaam’s greed. Balaam could not see God.