2 Kings 23:23

23 but in the eighteenth year of King Josi'ah this passover was kept to the LORD in Jerusalem.

2 Kings 23:23 Meaning and Commentary

2 Kings 23:23

But in the eighteenth year of king Josiah, wherein this
passover was holden to the Lord in Jerusalem.
] This shows that Josiah must begin the reformation very early that year, since he did all that is before recorded in this and the preceding chapter by the fourteenth of Nisan, the day on which the passover was kept, which month answers to part of our March and part of April, see ( 2 Kings 22:3 ) and was the same year the repairs of the temple were finished.

2 Kings 23:23 In-Context

21 And the king commanded all the people, "Keep the passover to the LORD your God, as it is written in this book of the covenant.
22 For no such passover had been kept since the days of the judges who judged Israel, or during all the days of the kings of Israel or of the kings of Judah;
23 but in the eighteenth year of King Josi'ah this passover was kept to the LORD in Jerusalem.
24 Moreover Josi'ah put away the mediums and the wizards and the teraphim and the idols and all the abominations that were seen in the land of Judah and in Jerusalem, that he might establish the words of the law which were written in the book that Hilki'ah the priest found in the house of the LORD.
25 Before him there was no king like him, who turned to the LORD with all his heart and with all his soul and with all his might, according to all the law of Moses; nor did any like him arise after him.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.