2 Chronicles 29:3, 16

In the first year of his kingship, in the first month, he opened the doors of the house of Yahweh and strengthened them.

And the priests went into the inner part of the house of Yahweh to purify it. And they brought out all the impurity that they found in the temple of Yahweh out to the courtyard of the house of Yahweh. And the Levites took them to bring them outside to the Wadi Kidron.