1 Corinthians 5:8-9

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 

5:9 I wrote you in my letter not to associate with sexually immoral people.

[5:8]  ¹ tn Grk “with the unleavened bread of sincerity and truth.”