Jonah
Jonah 3:6ESV·traditional attribution

The word reached the king of Nineveh, and he arose from his throne, removed his robe, covered himself with sackcloth, and sat in ashes.

John Calvin Reformed @genevareformer

It is uncertain whether Jonah had preached for some days in the city before it was known to the king. This is indeed the common opinion; for interpreters so expound the verse, which says that word was brought to the king, as though the king himself knew, that the whole city was in commotion through the preaching of Jonah: but the words admit of a...

John Gill Reformed Baptist @doctorgill

For word came unto the king of Nineveh,.... Who was not Sardanapalus, a very dissolute prince, and abandoned to his lusts; but rather Pul, the same that came against Menahem king of Israel, Kg2 15:19, as Bishop Usher (s) thinks; to him news were brought that there was such a prophet come into the city, and published such and such things, which met with credit...

Jamieson-Fausset-Brown Reformed @jfbcommentary

in ashes--emblem of the deepest humiliation (; ).