2 Chronicles 5:8

The cherubim (angels) outstretched wings were over the place where the Ark rested so that the cherubim became a covering above the Ark and its poles.

Exodus 25:12-15

Make four carrying rings of gold for it and attach them to its four legs, with two rings on each side.

Exodus 37:3-5

He cast four gold rings for its four feet, two rings on each side.

Numbers 4:6

Over this they will put a covering of fine leather. On top of that they will spread a cloth made entirely of violet material. Then they will put the poles in place.

Treasury of Scripture Knowledge

Summary

For the cherubims spread forth their wings over the place of the ark, and the cherubims covered the ark and the staves thereof above.

Bible References

The staves

Exodus 25:12
Make four carrying rings of gold for it and attach them to its four legs, with two rings on each side.
Exodus 37:3
He cast four gold rings for its four feet, two rings on each side.
Numbers 4:6
Over this they will put a covering of fine leather. On top of that they will spread a cloth made entirely of violet material. Then they will put the poles in place.