Daniel 4:29-30
At the end of the twelve months he was walking about the royal palace of Babylon. The king spoke, saying, “Is not this great Babylon, that I have built for a royal dwelling by my mighty power and for the honor of my majesty?”

This is a man that does not learn his lesson.
He exhibited anti-God, self-serving tendencies several times and admitted, in the end, the God of the Hebrews was the true God.
He even promoted the very men he once threatened.
He was told a year before this scripture that his pride would once again get him in trouble.
And so it did.
No sooner did he speak these words – he became like an animal, driven from men and eating grass like oxen; his body was wet with the dew of heaven till his hair had grown like eagles’ feathers and his nails like birds’ claws. (Daniel 4:33)
You cannot blame Nebuchadnezzar because most of us do much the same – never learn our God lesson.
Like the king, when we don’t learn the lesson we go through some difficult and trying times before we come to our senses, repent, and return to God.