Exodus 25:22 - And there I will meet with thee, and I will commune with thee from above the mercy seat, from between the two cherubims which [are] upon the ark of the testimony, of all [things] which I will give thee in commandment unto the children of Israel.
Psalm 18:7-12 (KJV)
7 Then the earth shook and trembled; the foundations also of the hills moved and were shaken, because he was wroth.
8 There went up a smoke out of his nostrils, and fire out of his mouth devoured: coals were kindled by it.
9 He bowed the heavens also, and came down: and darkness was under his feet.
10 And he rode upon a cherub, and did fly: yea, he did fly upon the wings of the wind.
11 He made darkness his secret place; his pavilion round about him were dark waters and thick clouds of the skies.
12 At the brightness that was before him his thick clouds passed, hail stones and coals of fire
The Ark of the Covenant, also known as the Ark of the Testimony, is a gold-covered wooden chest with lid cover described in the Book of Exodus as containing the two stone tablets of the Ten Commandments.