The cowardly, the unbelieving, the vile, the murderers, the sexually immoral, those who practice magic arts, the idolaters and all liars—they will be consigned to the fiery lake of burning sulfur. –Revelation 21:8 (NIV)

You cannot drink the cup of the Lord and the cup of demons too. –1 Corinthians 10:21 (NIV)

 Abstain from all appearance of evil. –1 Thessalonians 5:22 (KJV)

Why do you look at the speck of sawdust in your brother’s eye and pay no attention to the plank in your own eye? How can you say to your brother, ‘Let me take the speck out of your eye,’ when all the time there is a plank in your own eye? You hypocrite, first take the plank out of your own eye, and then you will see clearly to remove the speck from your brother’s eye. –Matthew 7:3-5 (NIV)

Break down their altars, smash their sacred stones and burn their Asherah poles in the fire; cut down the idols of their gods and wipe out their names from those places.  –Deuteronomy 12:3 (NIV)