'Unleavened' in the Bible

Offering every day what had been ordered by Moses, on the Sabbaths and at the new moon and at the regular feasts three times a year, that is at the feast of unleavened bread, the feast of weeks, and the feast of tents.

So a very great number of people came together at Jerusalem to keep the feast of unleavened bread in the second month.

So the children of Israel who were present in Jerusalem kept the feast of unleavened bread for seven days with great joy: and the Levites and the priests gave praise to the Lord day by day, making melody to the Lord with loud instruments.

And all the children of Israel who were present kept the Passover and the feast of unleavened bread at that time for seven days.