19 Seven days no sourdough is to be found in YOUR houses, because anyone tasting what is leavened, whether he is an alien resident or a native of the land,+ that soul must be cut off from the assembly of Israel.+

17 It should not be baked with anything leavened.+ I have given it as their share out of my offerings made by fire.+ It is something most holy,+ like the sin offering and like the guilt offering.

12 Then they grasped that he said to watch out, not for the leaven of the loaves, but for the teaching+ of the Pharisees and Sadducees.

7 Clear away the old leaven, that YOU may be a new lump,+ according as YOU are free from ferment. For, indeed, Christ+ our passover+ has been sacrificed.+

9 A little leaven ferments the whole lump.+