for he cometh to judge the earth: yea with righteousness shall he judge the world, and the people with his truth. {TYNDALE: For he cometh to judge the earth. Thank the LORD for he is good, and his mercy lasteth ever.}

He will repent

"For the LORD will do justice unto his people, and have compassion on his servants. For it shall be seen that their power shall fail, and at the last they shall be prisoned and forsaken.

And they put away the strange gods from them and served the LORD. And the misery of Israel grieved his soul.

And God sent the angel to Jerusalem to destroy it. And as he was about to destroy, the LORD beheld and had compassion on the wretchedness, and said to the angel that destroyed, "It is enough, now cease thine hand." And the angel of the LORD stood by the threshing floor of Ornan the Jebusite.

What great things have I given thee, O Ephraim? How faithfully have I defended thee, O Israel? Have I dealt with thee as with Adam? Or have I entreated thee like Zeboim? No, my heart is otherwise minded. Yea, my mercy is to fervent:

So the LORD was gracious therein, and the LORD said, "Well, it shall not be."

And he prayed unto the LORD and said, "O LORD, was not this my saying when I was yet in my country? And therefore I hasted rather to flee to Tarshish: for I knew well enough that thou wast a merciful god, full of compassion long before thou be angry, and of great mercy and repentest when thou art come to take punishment.

General references

How can a man make those, his gods, which are not able to be gods?"

So the LORD was merciful therein, and the LORD God said, "Well, it shall not be."