What does the Bible say about unleavened bread?

In Exodus 12:15-24, God commands Israel to eat unleavened bread for seven days to commemorate the Exodus from Egypt. This observance signifies the necessity of removing leaven, which symbolizes sin and false doctrine. The seriousness of this command is underscored by the warning that any soul consuming leavened bread during this time would be cut off from Israel. Unleavened bread, therefore, is not just a dietary restriction but a profound spiritual lesson about the purification from sin that God's people should pursue.