“You must not offer the blood of my sacrifice with yeast; the sacrifice from the feast of Passover must not remain until the following morning. ¹ 

Then Moses summoned all the elders of Israel, and told them, “Go and select ¹  for yourselves a lamb or young goat ²  for your families, and kill the Passover animals. ³ 

¹ The Lord said to Moses and Aaron, “This is the ordinance of the Passover. No foreigner may ²  share in eating it. ³