TSK
Treasury of Scripture Knowledge references in NET.
You are to put the two stones on the shoulders of the ephod, stones of memorial for the sons of Israel, and Aaron will bear their names before the LORD on his two shoulders for a memorial.
It was a memorial for the Israelites, that no outsider who is not a descendant of Aaron should approach to burn incense before the LORD, that he might not become like Korah and his company– just as the LORD had spoken by the authority of Moses.
You must not eat any yeast with it; for seven days you must eat bread made without yeast, as symbolic of affliction, for you came out of Egypt hurriedly. You must do this so you will remember for the rest of your life the day you came out of the land of Egypt.
The stones will be a reminder to you. When your children ask someday,‘Why are these stones important to you?’
The one who slaughters a bull also strikes down a man; the one who sacrifices a lamb also breaks a dog’s neck; the one who presents an offering includes pig’s blood with it; the one who offers incense also praises an idol. They have decided to behave this way; they enjoy these disgusting practices.