Leviticus 8:5 KJV

And Moses said unto the congregation, This is the thing which the Lord commanded to be done.
Leviticus 8:5, King James Version

In context

4 And Moses did as the Lord commanded him; and the assembly was gathered together unto the door of the tabernacle of the congregation.

5 And Moses said unto the congregation, This is the thing which the Lord commanded to be done.

6 And Moses brought Aaron and his sons, and washed them with water.