Knowing The Disciples

Αὕτη γάρ ἐστι τῶν μαθητῶν τοῦ Κυρίου ἡ εἰκὼν, ὁ χαρακτὴρ τῶν  τοῦ Θεοῦ δούλων, τὸ γνώρισμα τῶν ἀποστόλων· Ἐν τούτῳ γὰρ γνώσονται πάντες, φησίν, ὅτι μαθηταί μου ἐστε. Ἐν τίνι, εἰπέ; ἆρα ἐν τῷ νεκροὺς ἐγείρειν, ᾒ λεπτοὺς καθαίρειν, ἤ δαίμονας ἀπελαύνειν; Οὐχὶ, φησὶν, ἀλλὰ πάντα ἐκεῖνα παραδραμὼν, Ἐν τούτῳ γνώσονται πάντες, φησὶν, ὅτι μαθηταί μου ἐστὲ, ἐὰν ἀγαπᾶτε ἀλλήλους.   Ἅγιος Ἰωάννης ὁ Χρυσόστομος Περὶ Ἀκαταληπτου, Λόγος Πρῶτος Source: Migne PG 48 702

Love is the image of the Lord's disciples, the stamp of the servants of God, the mark of the Apostles. Christ said: 'For by this they will all know that you are my disciples.' 1 By what? Tell. Was it by raising the dead, or by curing lepers, or by the driving out of demons? No. Christ passed over all these signs and wonders and said: 'By this they will all know that you are my disciples: that you love one another.' Saint John Chrysostom, On The Incomprehensible Nature Of God, From the First Homily 1 Jn 13.35