iano writes:
He chose to eliminate sinners. What's the big deal in that? That he chose to protect and care for a particular group of sinners (the Israelites) is his affair. He had his reasons. Suffice to say that sinners have no right to life before God.
The obvious reason for your God favouring the Israelites is that they invented him. Locally invented Gods from other cultures show similar tendencies. They occupy themselves with the affairs of the tribe that invented them, and often with that tribe's neighbours, but never with people from the other side of the world that the tribe inventing the God/Gods have never heard of.
And, of course, they can be hostile to the neighbouring tribes, even to the point of supporting genocide, like the God of death you worship, and who is the subject of this thread.