Was God "mean" in the Old Testament?

Some secular, and even some so-called Christians, question whether there were two Gods in the Bible. One in the Old and one in the New Testament. (That type of heresy is nothing new-Marcion claimed that in the early days of the Church). Others go as far as to say the God of the Old Testament was "meaner" than in the New. They mock those who believe in Creation, the Flood and Tower of Babel as "literalists". They claim we should therefore also follow the laws of Moses in Leviticus about stoning homosexuals, witches, adulterers, etc. They think they "gotchya" with that argument. That sort of thinking illustrates just how little someone knows about the Bible, which is a chain-of-truth. When Israel was a child, then I loved him, and called my son out of Egypt. Hosea 11:1 The children of Israel were called out of centuries of deep heathenism. God treated them like children-in other words He was much stricter with them. He fenced them in to protect them with the Mosaic Laws. Paul tells us all these things happened for examples for us. Think of christianity as a grown up form of Judiaism. (It actually is, since we believe the Messiah foretold has come). Your more strict and discipline firmer your 10 year old than you would your 30 year old child. Today it is not for us to go around stoning people for sins. But it is a lesson from the past about what is and isn't sin and how serious God takes it. And NO, there are not two different Gods in the Bible, and NO God was not "mean" in the Old Testament. Then shall ye remember your own evil ways, and your doings that were not good, and shall lothe yourselves in your own sight for your iniquities and for your abominations. Not for your sakes do I this, saith the Lord GOD, be it known unto you: be ashamed and confounded for your own ways,... Ezekiel 36:31,32, Say unto them, AsI live, saith the Lord GOD, I have no pleasure in the death of the wicked; but that the wicked turn from his way and live: turn ye, turn ye from your evil ways; for why will ye die, O house of Israel? Ezekiel 33:11