Theophylact of Ohrid
Catena Aurea · Lukasevangelium 10
And he turned him unto his disciples, and said privately, Blessed are the eyes which see the things that ye see: For I tell you, that many prophets and kings have desired to see those things which ye see, and have not seen them; and to hear those things which ye hear, and have not heard them.
Having said above, No one knoweth who the Father is but the Son, and to whomsoever the Son will reveal him; He pronounces a blessing upon His disciples, to whom the Father was revealed through Him. Hence it is said, And he turned him unto his disciples, and said, Blessed are the eyes, &c.