Nehemiah's Dedication of Jerusalem's Walls

First, in vv 27-31a - The worship elements of Nehemiah's dedication ceremony.

(1) Joyful celebration (v 27)
(2) Purification or sanctification (v 30)
(3) Songs of thanksgiving (v 31a)

Second, in vv 31b-39 - The two thanksgiving choirs' marches upon Jerusalem's walls.

Third, in vv 41-43 - Both choirs entered the Temple with great rejoicing.

Fourth, in vv 44-47 - The great collection for the Temple servants.