Second Corinthians 6:14–18 begins with Paul’s command to the Corinthians not to be ”unequally yoked” with unbelievers. Light and darkness cannot be in fellowship. Christ and Satan cannot work together. Christians are God’s temples on earth since His Spirit lives in them. That’s why they must separate themselves from any kind of formal, binding relationship with unbelievers. Paul references several Old Testament Scriptures to show that believers in Jesus must separate themselves from being ”yoked” to unbelievers since God is their Father and lives among them.
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“2 Corinthians 6:18” Bibleref.com
2 Corinthians 6:17-18
17 Therefore “‘Come out from among them, and be separate,’ says the Lord. ‘Touch no unclean thing. 18 I will be to you a Father. You will be to me sons and daughters,’ says the Lord Almighty.”