Because of unity with Christ, we cannot break harmonious accord by also being in bed with Belial. Christ and Belial will never be melded together. Partersnip, fellowship, portion, agreement are all descriptive words indicative of  how we live with God in our midst (aka Christ). Paul warns the Corinthian church not to lose sight of these promises (for you are worth a Son to God). Instead, we should rid ourselves of every worthless spirit that drives us from unity with Him. – Teresa #worthlessnessisBelial

2 Corinthians 6: 14-18, 7:1 (ESV)

14 Do not be unequally yoked with unbelievers. For what partnership has righteousness with lawlessness? Or what fellowship has light with darkness? 15 What accord has Christ with Belial?[a] Or what portion does a believer share with an unbeliever? 16 What agreement has the temple of God with idols? For we are the temple of the living God; as God said,
“I will make my dwelling among them and walk among them,
    and I will be their God,

    and they shall be my people.

17 Therefore go out from their midst,

    and be separate from them, says the Lord,

and touch no unclean thing;

    then I will welcome you,

18 and I will be a father to you,

    and you shall be sons and daughters to me,

says the Lord Almighty.”

7 Since we have these promises, beloved, let us cleanse ourselves from every defilement of body[b] and spirit, bringing holiness to completion in the fear of God.