There seems to be the angry God of the Old Testament and the nicer God of the New Testament. This has nothing to do with God, who never changes. It has to do with Jesus, who brought us into peace with God by sacrificing once for all.

Jeremiah 19:3-5

You shall say, ‘Hear the word of the Lord, O kings of Judah and inhabitants of Jerusalem. Thus says the Lord of hosts, the God of Israel: Behold, I am bringing such disaster upon this place that the ears of everyone who hears of it will tingle. Because the people have forsaken me and have profaned this place by making offerings in it to other gods whom neither they nor their fathers nor the kings of Judah have known; and because they have filled this place with the blood of innocents, and have built the high places of Baal to burn their sons in the fire as burnt offerings to Baal, which I did not command or decree, nor did it come into my mind—
-Bible Gateway link: Jeremiah 19:3-5 (ESV)