Hebrews 9:4

Having the golden censer, and the ark of the covenant, overlaid round about with gold, wherein was a golden pot having the manna, 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 his power: and none could go into the temple, till the seven plagues of the seven angels were fulfilled.

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
Having the golden censer, and the ark of the covenant, overlaid round about with gold, wherein was a golden pot having the manna, and Aaron's rod that budded, and the tables of the covenant: