Daniel
Daniel 6:17ESV·traditional attribution

And a stone was brought and laid on the mouth of the den, and the king sealed it with his own signet and with the signet of his lords, that nothing might be changed concerning Daniel.

John Calvin Reformed @genevareformer

There is no doubt that God’s counsel provided that the nobles should seal the stone with their own rings, and thus close the mouth of the cave, and render the miracle more illustrious. For when the king approached on the morrow, the rings were all entire, and the seals all unbroken.

Matthew Henry Presbyterian @wholebiblehenry

Here is 1. Proof made of Daniel's praying to his God, notwithstanding the late edict to the contrary (Dan 6:11): These men assembled; the came tumultuously together, so the word is, the same that was used Dan 6:6, borrowed from Psa 2:1, Why do the heathen rage?

Commenting on Daniel 6:11-17

John Gill Reformed Baptist @doctorgill

Then the king went to his palace,.... After he had accompanied Daniel to the den, and he was cast into it, the stone was laid to the mouth of it, and that sealed; this was after sunset, for he had laboured till then to serve him, Dan 6:14, perhaps it was late at night: and passed the night fasting; vexed for what he had done...