"in the old testament where Jehovah directly was involved with killing of men, women, children....""
Where do you get that, that is bad? They deserved it. If those millions would have survived, they would have had children, etc, etc, and there would be millions, billions more today. It is really a good thing that they were divinely extinguished.
My problem is that he does not cause bad things to happen, but he does not stop them from happening when he has the power.