This Book is referred to by The Bashin' of the Christ part of The Itchy & Scratchy Show Season 28
The flags that come out of the guns say Isaiah 2:4 which is, "And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more."
The Bible is the central religious text of Judaism and Christianity.