As an atheist, I do not acknowledge "sin" in the sense you are using. Therefore, I'll cast stones with clear conscience. Spare me your possible claim that my beliefs are a sin. To you the claims are possible... but I don't agree.
The problem with this statement is basically one of innumeracy. Statistics don't define morality. Evil, even if committed against only one person, is still evil. The Israelis were defending their homeland. Hamas had to cross borders into Israeli territory to attack Jews. They were NOT defending their homeland. Israel fires their missiles at places where their sources say their enemy militants are staying, or at the place from which Hamas launches missiles or drones. Hamas sends their missiles and drones to where Israeli civilians are staying.
You deny being an anti-semite but then when you see blatant anti-semitism, you can't bring yourself to agree that is what is happening with Hamas and the people of Gaza. Do I wish for the conflict to end? You can bet on it. BUT ... do I expect Israel to "roll over and play dead"? Not on your life. Do I want everyone to forgive and forget? You would be halfway right. Always forgive... but never forget. Because if some time down the road this flares up again, ... so much for the integrity of a peace deal with Hamas. And if it DOES flare up, how do you stop repeated flare-ups? By killing off all of those who flared up, forgetting this most important lesson. "Turn the other cheek" works for a slap, but not for murder of infants and teenagers.