Moses made according to God's instructions.
It contained the 2 stone tablets with the 10 commandments written on them,
the jar with some manna in it and Aaron's stick
which blossomed with ripe almonds.
In Exodus37: 1-9
"Make a Box out of acacia wood, 45 inches long, 27 inches wide
and 27 inches high. Cover it with pure gold inside and out
and put a gold border all around it.
Make four carrying rings of gold for it and attach them to its four legs,
with two rings on each side.
Make carrying poles of acacia wood and cover them with gold
and put them through the rings on each side of the Box.
The poles are to be left in the rings and must not be taken out.
Then put in the Box the two stone tablets that I will give you,
on which the commandments are written.
"Make a lid of pure gold, 45 inches long and 27 inches wide.
Make two winged creatures of hammered gold,
one for each end of the lid.
Make them so that they form one piece with the lid.
The winged creatures are to face each other across the lid,
and their outspread wings are to cover it.
Put the two stone tablets inside the Box and put the lid on top of it.
I will meet you there, and from above the lid between the two winged creatures
I will give you all my laws for the people of Israel."
2 Maccabees 2: 4 -5
"These same records also tell us that Jeremiah, acting under divine guidance,
commanded the Tent of the Lord's Presence and the Covenant Box
to follow him to the mountain where Moses had looked down
on the land which God had promised our people.
When Jeremiah got to the mountain, he found a huge cave
and there he hid the Tent of the Lord's Presence, the Covenant Box,
and the altar of incense.
Then he sealed up the entrance."
Revelation 11: 19
God's temple in heaven was opened, and the Covenant Box was seen there.
Then there were flashes of lightning, rumblings and peals of thunder,
an earthquake, and heavy hail.