and Yahweh said to Moses, “Tell Aaron your brother not to come at any time he pleases into the Holy Place inside the veil before the mercy seat that is on the ark, lest he die; for I will appear in the cloud over the mercy seat. Bible

“Holy Place.” This holy place behind the inner veil of the Temple is often called “the Holy of Holies,” (cp. Exod. 26:33).

“appear in the cloud.” The bright glory that surrounds God was often described as a cloud. See commentary on Ezekiel 1:28.

Commentary for: Leviticus 16:2