'Feast of Unleavened Bread' in the Bible

even as the duty of every day required, offering according to the commandment of Moses, on the Sabbaths, and on the new moons, and on the set feasts, three times in the year, [even] in the feast of unleavened bread, and in the feas

And many people assembled at Jerusalem to keep the feast of unleavened bread in the second month, a very great assembly.

And the sons of Israel who were present at Jerusalem kept the feast of unleavened bread seven days with great gladness. And the Levites and the priests praised LORD day by day, with loud instruments to LORD.

And the sons of Israel who were present kept the Passover at that time, and the feast of unleavened bread seven days.