The Heights - 7:138
"We took the Children of Israel across the sea. They came upon a people who worshipped statues peculiar to them and said: "Moses, make for us a god like their gods". He said: "You are indeed an ignorant people!"
Why does Allah not forgive those who die serving others other than Him?
The Women/4:48
Allah does not forgive associating partners with Him, but other than that He forgives to whom He wills. Whoever associates partners with Allah has committed a great insult.
The Women/4:116
Allah does not forgive associating partners with Him (if it continues until death), but He forgives the sins below that to whom He wills. Whoever associates partners with Allah has gone astray.