2 Chronicles 19:2
And Jehu the son of Hanani the seer went out to meet him, and said to king Jehoshaphat, Should you help the ungodly, and love them that hate the LORD? therefore is wrath on you from before the LORD.
Torrey's Topical Textbook—AKJV

2 Corinthians 6:14-16
Be you not unequally yoked together with unbelievers: for what fellowship has righteousness with unrighteousness? and what communion has light with darkness?
Torrey's Topical Textbook—AKJV

Philippians 2:15
That you may be blameless and harmless, the sons of God, without rebuke, in the middle of a crooked and perverse nation, among whom you shine as lights in the world;
Torrey's Topical Textbook—AKJV