2 Chronicles 8:13

8:13 He observed the daily requirements for sacrifices that Moses had specified for Sabbaths, new moon festivals, and the three annual celebrations – the Feast of Unleavened Bread, the Feast of Weeks, and the Feast of Temporary Shelters.

2 Chronicles 30:13

30:13 A huge crowd assembled in Jerusalem to observe the Feast of Unleavened Bread in the second month.

2 Chronicles 35:17

35:17 So the Israelites who were present observed the Passover at that time, as well as the Feast of Unleavened Bread for seven days.