Reference: Various verses throughout the Old Testament
Why does God hate yeast?
The laws in Exodus concerning yeast have everything to do with these two verses in Exodus 12…
26And when your childrens ask you, ‘What does this ceremony mean to you?’ 27then tell them, ‘It is the Passovert sacrifice to the Lord, who passed over the houses of the Israelites in Egypt and spared our homes when he struck down the Egyptians.’
God does not hate yeast. God was insuring that the people would remember his rescue of them from Egypt. On the night of the passover they made bread without leaven (yeast), Exodus 12:8. It is likely that this was done because they were preparing for a haste exit from the Egypt (Exodus 12:39). Thus, every year in preparation for the passover feast, the Israelites did not eat bread with leaven in it as a powerful reminder of what God had done for them. As Exodus 12:26-27 says it is about reminding future generations about what God did for his people. Ceremony is a powerful way to remember, and it is the same reason why we share bread and wine on a regular basis. We remember what Christ did for us on the cross, his body (the blood) and his blood (the wine) broken and shed for us.