Levitico 23:41

⁴¹ Celebrerete questa festa in onore dell’Eterno per sette giorni, ogni anno. E’ una legge perpetua, di generazione in generazione. La celebrerete il settimo mese.

Leaven

'Leaven' signifies evil and falsity which should not be mixed with good and true things.

¹¹ "'No meal offering, which you shall offer to Yahweh, shall be made with yeast; for you shall burn no yeast, nor any honey, as an offering made by fire to Yahweh.