Chambers of Jehovah
The chambers of Jehovah, as mentioned in Psalms 104:3, signify the heavens and the church.
(References: Apocalypse Explained 594)
Great lights
Great lights, as in luminaries, signify love and faith, and are called in Genesis 1:14-17 the sun, moon, and stars.
(References: Arcana Coelestia 31 [1-3])