Obama's outrage - in the name of the just God

In his outrage at Mr. Foley's beheading, President Obama opined that "no just God would stand for what they did yesterday." Before we start killing people in the name of the just God, let's remember that Jews, Christians and Muslims all profess to worship the same God. Presumably Obama learned about God's justness from the Old Testament. In Exodus 12, to free the Jews "the Lord smote all the first born in Egypt." When the Jews came to Jericho, Joshua 6 tells us that God gave the Israelis their marching orders, caused the walls to fall, and the Jews "destroyed with sword every living thing in it. But more on point, per 1 Samuel 17, when little David felled the "uncircumcised Philistine" with a pebble "in the name of the Lord almighty," he then "cut off his head" and paraded it around for all to see. So what "just God" is Obama talking about? The one little Jewish, Christian and Muslim children are told about in temples, churches and mosques? It should be no surprise that some of them take these stories literally and grow up to bomb and behead others in the "name of the Lord almighty.”