“Look here!” The Greek word is idou (#2400 ἰδού), and it is used to get our attention. See commentary on Matthew 1:20.

“astonished.” This is a very powerful word; from the Greek ekplesso (#1605 ἐκπλήσσω). It designates an overwhelming astonishment: “to cause to be filled with amazement to the point of being overwhelmed.”^a After days of diligently searching for their missing child, Joseph and Mary are flooded with emotions at his discovery.