Wait a second. When you go quoting the Bible please put it in the right context. The Bible does not state to go whack anyone that doesn't believe in our one God, their Koran does and they justify their behavior with the passage of destruction of the infidel.
Okay, let's examine it in context then. Exodus 22 is a continuation of the oration delivered by Moses to the Israelites after God revealed his commandments to him.
Exodus 20 laid out the 'big ten', and then Exodus 21 and 22 elaborated on the detailed finer points, including the permissiveness of owning Hebrew slaves, by the way.
The specific passage I cited, 'He that sacrificeth unto any god, save unto the LORD only, he shall be utterly destroyed' is but one of many crime and punishment commandments listed. The two prior are 'Thou shalt not suffer a witch to live' and 'Whosoever lieth with a beast shall surely be put to death'.
Please tell me how I am misinterpreting the context of this commandment.