2 Kings 23:21-23
And the king commanded all the people, saying, Keep the passover to the LORD your God, as it is written in the book of this covenant.
Nave's Topical Index—AKJV

2 Chronicles 35:1-19
Moreover Josiah kept a passover to the LORD in Jerusalem: and they killed the passover on the fourteenth day of the first month.
Nave's Topical Index—AKJV