'Enter' in the Bible

When you enter the land which the Lord will give you, as He has promised, you shall observe this rite.

They shall be on Aaron and on his sons when they enter the tent of meeting, or when they approach the altar to minister in the holy place, so that they do not incur guilt and die. It shall be a statute forever to him and to his descendants after him.

when they enter the tent of meeting, they shall wash with water, so that they will not die; or when they approach the altar to minister, by offering up in smoke a fire sacrifice to the Lord.

Moses was not able to enter the tent of meeting because the cloud had settled on it, and the glory of the Lord filled the tabernacle.