Isn't that an interesting phrase? It's what Jews say when they hear of a great injustice. When someone is murdered - we ask that God avenge his/her blood. It isn't said all the time...but when it is said, it is said with the acceptance that there are things beyond human justice and so we trust this to God.
I just checked the news and saw that an Israeli had been killed near the Syrian border - in Israel...and then it got worse. Without thinking, automatically, I said those words, "May God avenge his blood." The victim of the mortar attack from Syria was a 15-year-old boy.
May God avenge his blood...we don't bomb whole cities as they do; we don't kidnap teenagers. We don't murder 3 month old babies with our bare hands; we don't stab 3 year olds in the heart.
We don't flatten whole areas in our anger or our need to avenge. We might, in the coming hours, attack a military target; knock out the site from which the mortar was fired. We might bomb a military training camp and we may go door to door, arresting terrorists and confiscating bombs, explosives, knives, guns and bullets - as we have been doing for the last 10 days as we search for Gilad, Eyal and Naftali.
May God avenge his blood...God...and not us. We don't act in vengeance. We leave that to God, we trust with complete faith that He will answer for the life of a boy now gone.