1 Corinthians 5:8-10

Young's Literal Translation

⁸ so that we may keep the feast, not with old leaven, nor with the leaven of evil and wickedness, but with unleavened food of sincerity and truth.

⁹ I did write to you in the epistle, not to keep company with whoremongers --

¹⁰ and not certainly with the whoremongers of this world, or with the covetous, or extortioners, or idolaters, seeing ye ought then to go forth out of the world --