'Feast of Unleavened Bread' in the Bible

Now many people were gathered at Jerusalem to celebrate the Feast of Unleavened Bread in the second month; it was a very large assembly.

The Israelites who were present in Jerusalem celebrated the Feast of Unleavened Bread for seven days with great joy. The Levites and priests praised the Lord day after day, singing to the Lord with loud instruments.

Thus the sons of Israel who were present celebrated the Passover at that time, and the Feast of Unleavened Bread for seven days.