'Kept Under Guard' in the Bible

For he was commanding the unclean spirit to come out from the man. For oftentimes it had seized him: and he was kept under guard, and bound with chains and fetters; and breaking the bands asunder, he was driven of the demon into the deserts.

And when he had read the letter, he inquired to what province he belonged. And learning that he was from Cilicia, he said: I will hear you when your accusers also have come. And he ordered him to be kept under guard in Herod's palace.

he said, “I will give you a hearing whenever your accusers get here too.” And he ordered that he be kept under guard in Herod’s palace.

But [when] Paul appealed [that] he be kept under guard for the decision of His Majesty the Emperor, I gave orders [for] him to be kept under guard until I could send him to Caesar."

Remember, God did not spare angels when they sinned, but sent them down to Tartarus, and committed them to caverns of darkness, to be kept under guard for judgment.