Romans 12:1,2

1. I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.

2. And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.

2 Corinthians 6:14-18

14. Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?

15. And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?

16. And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people.

17. Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you,

18. And will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty.