They that observe lying vanities forsake their own mercy. They that worship idols, who are nothing, mere vanity and lies, and deceive those that serve them, these forsake the God of their lives, and of their mercies; and so do all such who serve divers lusts and pleasures, and pursue the vanities of this life; and also those who follow the dictates of carnal sense and reason, to the neglect of the will of God, and obedience to his commands; which was Jonah's case, and is, I think, chiefly intended. The Targum, Syriac version, and so Jarchi, and most interpreters, understand it of worshippers of idols in general; and Kimchi of the mariners of the ship Jonah had been in; who promised to relinquish their idols, but did not; and vowed to serve the Lord, and sacrifice to him, but did not perform what they promised. But I rather think Jonah reflects upon himself in particular, as well as leaves this as a general instruction to others; that should they do as he had done, give way to an evil heart of unbelief, and attend to the suggestions of a vain mind, and consult with flesh and blood, and be directed thereby, to the disregard of God and his will; they will find, as he had done to his cost, that they forsake that God that has been gracious and merciful to them, and who is all goodness and mercy,
Psalms 144:3; which to do is very ungrateful to him, and injurious to themselves; and now he being sensible of his folly, and influenced by the grace and goodness of God to him, resolves to do as follows: