All that we see or seem, is but a dream within a dream

Jacob's Ladder 

(1905) 

SIR EDWARD BURNE-JONES

And he dreamed, 

and behold a ladder set up on the earth, 

and the top of it reached to heaven: 

and behold the angels of God ascending and descending on it. 

Genesis 28:12 RV

And he said, 

Hear now my words: 

if there be a prophet among you, 

I the LORD will make myself known unto him in a vision, 

I will speak with him in a dream. 

Numbers 12:6 RV

In a dream, 

in a vision of the night, 

when deep sleep falleth upon men, 

in slumberings upon the bed; 

Job 33:15 RV

It struck me that these three may be related. Dreams are mentioned frequently in the OT, but usually it is God speaking to someone in a dream. 

These three are visions within a dream.