TSK
Treasury of Scripture Knowledge references in NET.
For seven days you must eat bread made without yeast. Surely on the first day you must put away yeast from your houses because anyone who eats bread made with yeast from the first day to the seventh day will be cut off from Israel.
“Speak to the Israelites and tell them,‘When you enter the land that I am about to give to you and you gather in its harvest, then you must bring the sheaf of the first portion of your harvest to the priest,
The Festival of Weeks You must count seven weeks; you must begin to count them from the time you begin to harvest the standing grain.
Lord of the Sabbath At that time Jesus went through the grain fields on a Sabbath. His disciples were hungry, and they began to pick heads of wheat and eat them.