20 but they go not in to see when the holies are swallowed, lest they die.
Numbers 4:20 Cross References - ECB
Exodus 19:21
21 And Yah Veh says to Mosheh, Descend, witness to the people, lest they break through to Yah Veh to see - and many of them fall:
Leviticus 10:2
2 And fire comes from the face of Yah Veh and devours them; and they die at the face of Yah Veh.
Numbers 4:15
15 And Aharon and his sons finish covering the holies and all the instruments of the holies, as the camp pulls stakes. Afterward, the sons of Qehath come to bear it: but they touch not the holies, lest they die. - these are the burden of the sons of Qehath in the tent of the congregation.
Numbers 4:19
19 but work thus to them, that they live and not die, when they approach the holy of holies: Aharon and his sons go in and set them man by man to his service and to his burden:
1 Samuel 6:19
19 And he smites the men of Beth Shemesh because they saw into the ark of Yah Veh; and of the people he smites fifty thousand and seventy men: and the people mourn because Yah Veh smites the people a great stroke.
Hebrews 10:19-20
Revelation 11:19
19 And the nave of Elohim opens in the heavens and the ark of his covenant is seen in his nave: and there become lightnings and voices and thunderings and a quake and mega hail.