Numbers 4:20
but they shall not go in to see the sanctuary even for a moment, lest they die.
Exodus 19:21
And LORD said to Moses, Go down, command the people, lest they break through to LORD to gaze, and many of them perish.
1 Samuel 6:19
And he smote of the men of Beth-shemesh, because they had looked into the ark of LORD. He smote of the people fifty thousand and seventy men. And the people mourned, because LORD had smitten the people with a great slaughter.
Leviticus 10:2
And there came forth fire from before LORD, and devoured them, and they died before LORD.
Numbers 4:15
And when Aaron and his sons have made an end of covering the sanctuary, and all the furniture of the sanctuary, as the camp is set forward, after that, the sons of Kohath shall come to bear it, but they shall not touch the sanctuar
Numbers 4:19
but thus do to them, that they may live, and not die, when they approach to the most holy things. Aaron and his sons shall go in, and appoint for them each one to his service and to his burden,
Hebrews 10:19-20
Having therefore, brothers, boldness for entrance into the holy things by the blood of Jesus,
Revelation 11:19
And the temple of God was opened in heaven, and the ark of the covenant of the Lord was seen in his temple. And there occurred lightnings, and voices, and thunders, and great hail.