I love the story of King Nebuchadnezzar. He had a dream which made him afraid. The things he saw in his dream he did not understand. He called all of the wise men of Babylon before him to interpret his dream. There was only one who could interpret the dream. Betleshazzar (A.K.A. Daniel) who was friends with Shadrach, Meshach, and Abed-Nego.
Belteshazzar told King Nebby to break off from his sins by being righteous and showing mercy to the poor. The king was a narcissistic old bugger and one day as he was parading around through the village of Babylon speaking of how great (sound familiar) everything was. While he was letting everyone know the city was built from his mighty power, a voice fell from the heavens.
Immediately King Nebby turned looney tune and started running around like a crazy man, eating grass and rolling around on the ground naked, letting his hair grow long and unkempt. While his actions were insane and animalistic, it was during that time he learned more about God than ever before. Nebuchadnezzar had to be humbled before he could be exalted.
Moral of the nightmare: the chastisement of God is always for a holy and helpful purpose. So if Donald Trump starts running around eating grass like the oxen, praise God!