Numbers 9:10 Speak unto the children of Israel, saying, If any man of you or of your posterity shall be unclean by reason of a dead body, or be in a journey afar off, yet he shall keep the passover unto the LORD.

Numbers 9:11 The fourteenth day of the second month at even they shall keep it, and eat it with unleavened bread and bitter herbs.

2 Chronicles 30:2 For the king had taken counsel, and his princes, and all the congregation in Jerusalem, to keep the passover in the second month.

2 Chronicles 30:3 For they could not keep it at that time, because the priests had not sanctified themselves sufficiently, neither had the people gathered themselves together to Jerusalem.

2 Chronicles 30:15 Then they killed the passover on the fourteenth day of the second month: and the priests and the Levites were ashamed, and sanctified themselves, and brought in the burnt offerings into the house of the LORD.

2 Chronicles 30:17 For there were many in the congregation that were not sanc-tified: therefore the Levites had the charge of the killing of the passovers for every one that was not clean, to sanctify them unto the LORD.

2 Chronicles 30:18 For a multitude of the people, even many of Ephraim, and Manasseh, Issachar, and Zebulun, had not cleansed themselves, yet did they eat the passover otherwise than it was written. But Hezekiah prayed for them, saying, The good LORD pardon every one

Exodus 23:17 Three times in the year all thy males shall appear before the Lord GOD.