It is written,
"Abstain from all appearance of evil." (1 Thessalonians 5:22).
"Pure religion and undefiled before God and the Father is this, To visit the fatherless and widows in their affliction, and to keep himself unspotted from the world." (James 1:27).
"Let love be without dissimulation. Abhor that which is evil; cleave to that which is good." (Romans 12:9).
"...and what communion hath light with darkness?" (2 Corinthians 6:14).
"And they shall teach my people the difference between the holy and profane, and cause them to discern between the unclean and the clean." (Ezekiel 44:23).
"...and men loved darkness rather than light, because their deeds were evil." (John 3:19).
"Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him." (1 John 2:15).