John Wesley on Jeremiah 14:22

Rain - The present judgment under which they groan, was a drought, which he had described in the six first verses; the prophet imploring God for the removal of it, argues, from the impossibility of help in this case from any other way, none of the idols of the Heathens, which he calls vain things, nothing in themselves, and of no use, or profit to those that ran after them. Give showers - Without thy will? Art not - Lord, art not thou he alone who is able to do it? The scripture constantly gives God the honour of giving rain.