4 Bible Verses about Marriages, Believers With Unbelievers

Be not unequally yoked with infidels; for what participation hath righteousness with unrighteousness? and what fellowship [is there] between light and darkness? and what concord of Christ with Belial? or what share hath he that believeth with an infidel? or what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, "I will inhabit in them, and walk about in them; and I will be their God, and they shall be for me a people."

Be not deceived: evil conversations corrupt good manners.

We know that we are of God, and the whole world is under the power of that wicked one.

Know ye not that your bodies are the members of Christ? Taking then the members of Christ, shall I make them members of an harlot? God forbid. Do you not know that he that is joined to an harlot is one body with her? For they two, saith he, shall be "one flesh." But he that is joined to the Lord is one spirit.read more.
Flee whoredom. Every other sin which a man may commit is without the body; but he who committeth whoredom sinneth against his own body. Do ye not know that your body is the temple of the Holy Ghost, which is in you, which ye have from God, and ye are not your own? For ye have been bought with a price: glorify then God in your body, and in your spirit, which are God's.