When God saw their actions—that they had turned from their evil ways—He relented from the disaster He had threatened to bring upon them.
Jonah now says, that the Ninevites obtained pardon through their repentance: and this is an example worthy of being observed; for we hence learn for what purpose God daily urges us to repentance, and that is, because he desires to be reconciled to us, and that we should be reconciled to him.
And God saw their words, that they turned from their evil way,.... Not their outward works, in putting on sackcloth and ashes, and fasting; but their inward works, their faith in him, and repentance towards him; and which were attended with fruits and works meet for repentance, in that they forsook their former course of life, and refrained from it; and these he saw not...
God repented of the evil--When the message was sent to them, they were so ripe for judgment that a purpose of destruction to take effect in forty days was the only word God's righteous abhorrence of sin admitted of as to them. But when they repented, the position in which they stood towards God's righteousness was altered.