I was greatly displeased...I ordered: When people rejected God's instructions, Nehemiah spoke up.
Everything related to the temple had to be purified and dedicated to God. This included:
The clothes that the priests and Levites wore (Exodus 29)
The priests themselves (Leviticus 8–9)
The temple building and altars (Leviticus 16:15–33)
All the holy items (1 Chronicles 23:28)
They were all purified (compare 2 Chronicles 29:5, 15–19).