2 Kings - Chapter 23
In this chapter we see Josiah reading the word of God; renewing the Covenant with God; cleansing the Temple; and celebrating the Passover in Jerusalem.
The exile is approaching and Josiah is the last "good King" of Judah - the next good King to come will be Jesus. It is therefore fitting to see the four things listed above all pointing ahead to Jesus.
Not only did Jesus read the word of God to the people, but he is described by John at the start of his Gospel as the Word.
The Covenant which Josiah renewed was preparing the way for the New Covenant in Jesus.
In Matthew 21 we read of Jesus cleansing the Temple:
"Then Jesus went into the temple of God and drove out all those who bought and sold in the temple, and overturned the tables of the money changers and the seats of those who sold doves. And He said to them, “It is written, ‘My house shall be called a house of prayer,’ but you have made it a ‘den of thieves.’ ”"
And Jesus ate the Passover meal with his disciples on the night of his arrest; later known as the Last Supper.