1 Corinthians 5:8

5:8 So then, let us celebrate the festival, not with the old yeast, the yeast of vice and evil, but with the bread without yeast, the bread of sincerity and truth. ¹ 

1 Corinthians 5:6

5:6 Your boasting is not good. Don’t you know that a little yeast ²  affects ³  the whole batch of dough?

¹ tn Grk “with the unleavened bread of sincerity and truth.”

² sn In this passage (5:6-8) yeast represents the presence of evil within the church, specifically the immoral person described in 5:1-5 and mentioned again in 5:13.

³ tn Grk “a little yeast leavens.”