The law of the Medo-Persians rendered Darius powerless to save Daniel, although he desired to save him.
Daniel 6:14 NKJV
“And the king, when he heard these words, was greatly displeased with himself, and set his heart on Daniel to deliver him; and he labored till the going down of the sun to deliver him.”
The Medo-Persian government involved several layers of power which made it quite close to a democracy.
Daniel 6:1-2 NKJV
“It pleased Darius to set over the kingdom one hundred and twenty satraps, to be over the whole kingdom; and over these, three governors, of whom Daniel was one, that the satraps might give account to them, so that the king would suffer no loss.”
The king tried to save Daniel but the other authorities used the law to frustrate him.
Daniel 6:15 NKJV
“Then these men approached the king, and said to the king, “Know, O king, that it is the law of the Medes and Persians that no decree or statute which the king establishes may be changed.”
Darius the king, had power but he had to submit to a combination of the law and his ministers, just like in a democracy. He was forced against his will, to throw his friend Daniel to the lions.
Daniel 6:16 NKJV
“So the king gave the command, and they brought Daniel and cast him into the den of lions. But the king spoke, saying to Daniel, “Your God, whom you serve continually, He will deliver you.”
The king however had faith that what he couldn’t do, almighty God could do. He assured Daniel that God would deliver him.
The Babylonian system however was an absolute monarchy.
Nebuchadnezzar could not be subjected to the kind of manipulation, that was used against Darius because his word was the law. If he didn’t like any law, all he had to do was to say something new, and it would become the new law.
May God’s kingdom prevail in your life and family. May you meditate and act on God’s word so that you may prosper, in Jesus’s name.