Christians :If a person believes in Jesus's sacrifice?

"what if he worships an idol and believes Jesus's sacrifice at the same time"

That's contradictory. You can't believe in an idol and also in Christ, who condemned idolatry.

You can't worship an idol and believe in Jesus. It's lying to your own beliefs. You cannot serve two masters.

I think that most relgious people (not counting devil worshippers) will go to heaven as long as they are a true believer and have some basic morals. But if you believe two things at once then you are not a true believer and i guess then your screwed. Jesus ( or someone like him) should be your idol.

you can not worship and idol and believe the bible its one of the ten commandments very clear to believe in Jesus' sacrifice you would have to believe the bible. and at least try and follow the ten commandments.

Hollywood..

Judge not and you will not be judged on a Eternal basis for he who is without sin cast the first stone.-Jesus Christ