John 7:14

Ἤδη δὲ τῆς ἑορτῆς μεσοῦσης. “But when it was now mid-feast,” i.e., the fourth day. μεσοῦν is commonly used in this sense: ἡμέρα μεσοῦσα, midday; θέρος μεσοῦν, midsummer. ἀνέβν … ἐδίδασκε. “Jesus went up to the temple and taught”; see John 18:20; He did not go to Jerusalem to seclude Himself and worship in private, nor did He go to proclaim Himself explicitly as Messiah. He went and taught. His teaching astonished the Jews, and they asked Πῶς οὗτος γράμματα οἶδε μὴ μεμαθηκώς; It is not His wisdom that astonishes them, for even uneducated men are often wise; but His learning or knowledge. γράμματα (Acts 26:24) “included the whole circle of rabbinical training, the sacred Scriptures, and the comments and traditions which were afterwards elaborated into the Mishna and Gemara” (Plumptre, Christ and Christendom). But it cannot be supposed that Jesus made Himself acquainted with these comments. His skill in interpreting Scripture and His knowledge of it is what is referred to. What the scribes considered their prerogative, He, without their teaching, excelled them in.