We see the first heaven by day,
the second heaven by night,
and the third heaven by faith. 

^" I know a man in Christ who fourteen years ago was caught up to the third heaven—whether in the body or out of the body I do not know, God knows. ³ And I know that this man was caught up into paradise—whether in the body or out of the body I do not know, God knows— ⁴ and he heard things that cannot be told, which man may not utter." 
(2 Corinthians 12:2-4 -- ESV)