Jamieson-Fausset-Brown Reformed @jfbcommentary

Here fellowship with wicked workers is forbidden; in Eph 5:11, with their wicked works.

Albert Barnes Presbyterian @notesbybarnes

Verse 7. Be not ye therefore partakers with them. Since these things displease God, and expose to his wrath, avoid them.

Geneva Bible Notes Reformed @genevanotes

Be not ye therefore partakers with them. (3) Because we are most ready to follow evil examples, therefore the apostle warns the godly to always remember that the others are but as it were darkness, and that they themselves are as it were light.