Every now and again, I'll read something that at least seems to hint at some kind of divide between the God of the Old Testament and Jesus in the New Testament.
To my experience, it's rarely plainly stated in such terms. The language is usually more weaselly. It might, for example, involve statement about how Jesus is the true revelation of God, and how we have to interpret the Bible, especially the Old Testament, through Jesus.
Of course, that does make sense. But then, the Jesus they try to set up turns out to be not much like the Jesus found in the New Testament.
For example, I've come on a few who try to question the existence of Hell using such an argument. Apparent, the fact the Jesus spoke of Hell as a very real place doesn't factor into their interpretations.
This kind of thing is often used by those who are theologically liberal.
For example, they will attempt to put a kind of separation between the God of the Old Testament, who often told people to go to war and told Israel to conquer to the Promised Land, and Jesus in the New Testament, who told people to love their enemies, bless those who curse you, and so on. They try to portray Jesus as being in favor of their pet forms of nonviolent resistance.
But the truth is this--Jesus never disapproved of anything the Father said or did in the Old Testament, and the Father never disapproved of anything the Son said or did in the New Testament. As Jesus Himself plainly stated, "I an the Father are One", and "Before Abraham was, I am". To put it another way, the God who told Yeshua (Joshua) to cross the Jordon and conquer the Promised Land is the same Yeshua (Jesus) who told us to love our enemies. There are not cross-purposes, there is no split between the two, there is not disagreement in the Godhead. Jesus did not attempts some kind Occupy Heaven stunt.
The same Jesus who spoke about loving enemies also told his disciples to sell a cloak to buy a sword. The same Jesus who spoke about loving enemies was the one who called His enemies hypocrites, blind guides, and said their father was the devil. Start getting your mind around these apparent (though not real) contradictions before trying to make the Godhead a family squabble.