Perhaps from the same as G3735 (through the idea of elevation); the sky; by extension heaven (as the abode of God); by implication happiness, power, eternity; specifically the Gospel (Christianity)
KJV Usage: air, heaven ([-ly]), sky.
From G1909 and G3772; above the sky
KJV Usage: celestial, (in) heaven (-ly), high.
From a presumed compound of G3319 and G3772; mid-sky
KJV Usage: midst of heaven.
From G3772 and the enclitic of source; from the sky