The word 'repent' is denied and affirmed to have application to God. He is not 'a son of man, that He should repent,' inasmuch as His immutability and steadfast purpose know no variableness. But just because they cannot change, and He must ever be against them that do evil, and ever bless them that turn to Him with trust, therefore He changes His dealings with us according to our relation to Him, and because He cannot repent, or be other than He was and is, 'repents of the evil that He had said that He would do' unto sinners when they repent of the evil that they have done against Him, inasmuch as He leaves His threatening unfulfilled, and 'does it not.'
So we might almost say that the purpose of this book of Jonah is to teach the possibility and efficacy of repentance, and to show how the penitent man, heathen or Jew, ever finds in God changed dealings corresponding to his changed heart. The widest charity, the humbling lesson for people brought up in the blaze of revelation, that dwellers in the twilight or in the darkness are dear to God and may be more susceptible of divine impressions than ourselves, the rebuke of all pluming ourselves on our privileges, the boundlessness of God's mercy, are among the other lessons of this strange book; but none of them is more precious than its truly evangelic teaching of the blessedness of true penitence, whether exemplified in the renegade Prophet returning to his high mission, or the fierce Ninevites humbled and repentant, and finding mercy from the God of the whole earth.
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