John 20:19

The time of the manifestation is defined, it was τῇ ἡμέρᾳ … σαββάτων “on that day, the first of the week,” and during the evening, οὔσης οὖν ὀψίας, which agrees with Luke's account, from which we learn that when Jesus and the two disciples reached Emmaus, two hours from Jerusalem, the day was declining. The evening was chosen, probably because then the disciples could be found together. The circumstance that the doors were shut seemed to John significant regarding the properties of the risen body of Jesus. τῶν θυρῶν κεκλε μένων, “the doors having been shut,” i.e., securely fastened so that no one could enter, because the precaution was taken διὰ τὸν φόβ ν τῶν Ἰουδαίων. So soon had the disciples begun to experience the risks they ran by being associated with Jesus. Calvin supposes Jesus opened the doors miraculously; but that is no suggested in the words. Rather it is indicated that His glorified body was not subject to the conditions of the natural, earthly body, but passed where it would. Suddenly ἔστη εἰς τὸ μέσον (cf. Luke 24:36). “Phrasis notat se in publico omnium conspectu sistere.” Kypke. Not only as the ordinary salutation, but to calm their perturbation at this sudden apparition (cf. Luke 24:37), He greets them with Εἰρήνη ὑμῖν, and to assure them of His identity ἔδειξεν … αὐτοῦ.