He looked upon them (εμβλεψας αυτοις). Not in Mark and Matthew. First aorist active participle of εμβλεπω, to look on. It was a piercing glance. The scripture quoted is from Psalm 118:22 and is in Mark 11:10; Matthew 21:42, which see for the inverted attraction of the case λιθον (stone) to that of the relative ον (which).