Jonah
Jonah 3:9BSB·traditional attribution

Who knows? God may turn and relent; He may turn from His fierce anger, so that we will not perish.”

John Calvin Reformed @genevareformer

The mind and design of the king are here more distinctly stated, — that he thus endeavored to reconcile himself and the people to God. Some give a rendering somewhat different, “He who knows will turn and be led by penitence,” etc.; they read not interrogatively; but this rendering cannot stand.

John Gill Reformed Baptist @doctorgill

Who can tell,.... The Septuagint and Arabic versions prefix to this the word "saying", and take them to be, not the words of the king, but of the Ninevites; though very wrongly: or "who is he that knows"; which some connect with the next word, "he will return": that is, that knows the ways of repentance, he will return, as Kimchi and Ben Melech; or...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Who can tell--(Compare ). Their acting on a vague possibility of God's mercy, without any special ground of encouragement, is the more remarkable instance of faith, as they had to break through long-rooted prejudices in giving up idols to seek Jehovah at all.