“Look!” The Greek word is idou (#2400 ἰδού), and it is used to get our attention. See commentary on Matthew 1:20 (“Look!).
“on a bed.” This “bed” was mats for sleeping. For more on beds in the biblical culture, see commentary on John 5:8.
“a man who was paralyzed.” This record of the healing of the paralyzed man occurs in Matthew 9:2-8; Mark 2:3-12; and Luke 5:18-26.