Hebrews 9:4

and the ark of the covenant which was overlaid all round with gold, and in which was the golden pot with the manna in it, and Aaron's rod that budded, and the tables of the covenant;

Revelation 15:8

And the temple was filled with smoke from the glory of God, and from the display of his power: so that no one could enter into the temple till the seven plagues of the seven angels should be finished.

Treasury of Scripture Knowledge

Summary

There was nothing in the ark save the two tables of stone, which Moses put there at Horeb, when the LORD made a covenant with the children of Israel, when they came out of the land of Egypt.

In the ark

Bible References

In the ark

Hebrews 9:4
and the ark of the covenant which was overlaid all round with gold, and in which was the golden pot with the manna in it, and Aaron's rod that budded, and the tables of the covenant;