God is a God of justice and of mercy. While his righteous anger against the people he had brought out of Egypt who, in the absence of Moses had pressed Aaron to make them gods to go before them, demanded that He consume them and make Moses become a great nation, yet Moses pleads with God to relent from harming His people.

He reasons with God as an advocate for the people, that the Egyptians would think that He had brought the people out in order to slay them among the mountains. Moses reminds God of his promise to Abraham, Isaac and Israel, "thy servants", that he would multipy their seed as stars of the heavens and all this land, he would give to their seed.

And God repenteth of the evil which he hath spoken of doing to His people.

Those who say that God is immutable, that He does not change, are wrong.

God is a God of ...