Why did the band Lamb Of God call themselves lamb of god?

Answer 1

They had to change their name from Burn The Priest, Their first self titled album depot was meant to be Lamb of God, But over religious controversy they changed their band name to Lamb of God and the debut to Burn the Priest

Answer 2

Originally the band was called Burn The Priest but they changed their name because of several protests and the new name was a way to mock those who protested them in the first place.