Psalm 18:10
8 Smoke ascended from his nose; fire devoured as it came from his mouth. He hurled down fiery coals. 9 He made the sky sink as he descended; a thick cloud was under his feet. 10 He mounted a winged angel and flew; he glided on the wings of the wind. 11 He shrouded himself in darkness, in thick rain clouds. 12 From the brightness in front of him came hail and fiery coals. 13 The Lord thundered in the sky; the Most High shouted.
2 Samuel 22:11
9 Smoke ascended from his nose; fire devoured as it came from his mouth; he hurled down fiery coals. 10 He made the sky sink as he descended; a thick cloud was under his feet. 11 He mounted a cherub and flew; he glided on the wings of the wind. 12 He shrouded himself in darkness, in thick rain clouds. 13 From the brightness in front of him came coals of fire. 14 The Lord thundered from the sky; the Most High shouted loudly.
Notes and References
"... God's Shekhinah rests in the seventh hekhal, thus in the highest, or if we imagine the arrangement concentrically innermost of the seven heavenly "palaces," which themselves are to be found in the highest (= seventh) heaven. Specifically, God sits, or his Shekhinah rests, on the 'throne of glory' (kisse ha-kavod), (In addition the traditional biblical notion of God who 'sits on the Keruvim' - compare section 34; see Psalms 80:2, 99:1; 1 Samuel 4:4; 2 Samuel 6:2; 2 Kings 19:15; Isaiah 37:16; 1 Chronicles 13:6 - or who 'rides' on the Keruvim. The only verse that speaks of God riding on the Keruv is Psalms 18:11 = 2 Samuel 22:11) which itself stands on the Merkavah (the "chariot" of Ezekiel 1), or the 'wheels of the Merkavah.' It is said of Yishma'el, for example, that he enters the seventh hekhal, is led to the 'camp of the Shekhinah,' and presented before the 'throne of glory' to behold the Merkavah; similarly, Meratron serves the 'throne of glory, the wheels of the Merkavah, and the needs of the Shekhinah.' ..."
Schäfer, Peter The Hidden and Manifest God: Some Major Themes in Early Jewish Mysticism (p. 124) State University of New York Press, 1992