20
Take nothing which has leaven in it; wherever you are living let your food be unleavened cakes.
Exodus 12:20
Arcana Coelestia #7875
7875. 'And the blood will be' means truth belonging to the good of innocence. This is clear from the meaning of 'the blood of the lamb' as truth belonging to the good of innocence, as above in 7846.
