In thoughts from the visions of the night; literally, in the perplexities of the visions of night; i.e. "in that perplexing time when—how, they know not—visions come to men." The word translated "thoughts" occurs only here and in Job 20:2.
When deep sleep falleth on men. Something more than ordinary sleep seems to be meant—something more approaching to what we call "trance" (comp. Genesis 2:21; Genesis 15:12; 1 Samuel 26:12, where the same word is used).