The First Commandment is quite clear.
"And God spoke all these words:
2 “I am the Lord your God, who brought you out of Egypt, out of the land of slavery.
3
“You shall have no other gods before me.
4 “You shall not make for yourself an image in the form of anything in heaven above or on the earth beneath or in the waters below.
5 You shall not bow down to them or worship them; for I, the Lord your God, am a jealous God, punishing the children for the sin of the parents to the third and fourth generation of those who hate me,
6 but showing love to a thousand generations of those who love me and keep my commandments."
http://www.biblegateway.com/passage/...20&version=NIV