‘It has seemed good to me to show the signs and wonders that the Most High God has wrought towards me. How great are his signs and how mighty are his wonders. His kingdom is an everlasting kingdom, and his dominion is from generation to generation.'
A frank admission that he had been at variance with the high ruler of the gods, (the term Most High God could refer to Marduk and would later be used of Zeus), removed all shame. Indeed it would produce some reluctant admiration. Even the lord of the earth must be humbled when at variance with the king of the gods. The word for signs indicates ‘that through which lessons were learned', the word for wonders indicated that they were of a supernatural nature. The everlastingness of the gods in general, and of their rule, was acknowledged by all, in contrast with the mortality of earthly kings.
To Daniel the words referred to the one and only God, Who was God Most High and ruled over all. That is why he included the decree in his book. But to Nebuchadnezzar, schooled all his life in polytheism and surrounded by polytheism, it would indicate the great God who was over all the gods, possibly the One Who had revealed Himself in His dealings over Shadrach, Meshach and Abednego and had spoken to him in his dreams, or possibly Marduk.
It is possible that the last phrases were influenced by Psalms 145:13, or alternately that Psalms 145:13 was influenced by this proclamation. In the former case we must see the influence of Daniel, in the latter confirmation that the proclamation was widespread and well known.