Hezekiah, one of the godliest kings in the Bible, was son of Ahaz, one of the worst. What does that have to do with worship? Hezekiah wanted to celebrate a passover, but his father had desecrated the temple with the connivance of the high priest (2 Kings 16, 2 Chronicles 28). He realized that he had to restore the priesthood and the temple before any passover celebration would be acceptable to God. 1 Corinthians 3:16-17 says that we, the church, are the temple. 1 Corinthians 6:19 says that our bodies individually are the temple. The temple is where God dwells. 1 Peter 2:9 says we are a royal priesthood. Priests minister in the temple. Therefore, Hezekiah's preparation, as told in 2 Chronicles 29, is a picture of what we, as priests and temple, need to do.