When it is time for the camp to journey, ¹  Aaron and his sons must come and take down the screening curtain and cover the ark of the testimony with it.

Now when Moses went into ¹  the tent of meeting to speak with the Lord, ²  he heard the voice speaking to him from above the atonement lid ³  that was on the ark of the testimony, from between the two cherubim. ⁴  Thus he spoke to him.