Adam Clarke on Daniel 6:16

Then the king commanded - With a heavy heart he was obliged to warrant this murderous conspiracy. But when passing sentence his last words were affecting: "Thy God, whom thou servest continually, he will deliver thee." He is thy God; thou servest him, not occasionally, but continually; therefore "he will deliver thee." Daniel had now the same kind of opportunity of showing his fidelity to God, as his three Hebrew companions before. The lions were not less terrible than the fiery furnace.