2 Kings 23:21
And the king commanded all the people, saying, "Keep the feast of passover unto the LORD your God, as it is written in the book of this covenant."
Deuteronomy 16:1-8
Observe the month of Abib, and offer Passover unto the LORD thy God. For in the month of Abib, the LORD thy God brought thee out of Egypt by night:
Exodus 12:3-20
Speak ye unto all the fellowship of Israel, saying that they take, the tenth day of this month, to every household: a sheep.
Leviticus 23:5-8
The fourteenth day of the first month at evening is the LORD's Passover.
Numbers 9:2-5
"Let the children of Israel offer Passover in his season:
Numbers 28:16-25
And the fourteenth day of the first month shall be Passover unto the LORD.
2 Chronicles 35:1-19
And Josiah held the feast of Passover unto the LORD in Jerusalem, and they slew Passover in the fourteenth day of the first month.