Luke 2:42 καὶ ὅτε ἐγένετο ἐτῶν δώδεκα, ἀναβαινόντων αὐτῶν κατὰ τὸ ἔθος τῆς ἑορτῆς
When he was twelve years old, they went up to Jerusalem according to the custom of the feast,
Noun: Accusative Singular Neuter

Luke 22:39 Καὶ ἐξελθὼν ἐπορεύθη κατὰ τὸ ἔθος εἰς τὸ ὄρος τῶν ἐλαιῶν, ἠκολούθησαν δὲ αὐτῷ καὶ οἱ μαθηταί.
He came out, and went, as his custom was, to the Mount of Olives. His disciples also followed him.
Noun: Accusative Singular Neuter

John 19:40 ἔλαβον οὖν τὸ σῶμα τοῦ Ἰησοῦ καὶ ἔδησαν αὐτὸ ὀθονίοις μετὰ τῶν ἀρωμάτων, καθὼς ἔθος ἐστὶν τοῖς Ἰουδαίοις ἐνταφιάζειν.
So they took Jesus' body, and bound it in linen cloths with the spices, as the custom of the Jews is to bury.
Noun: Nominative Singular Neuter

Acts 25:16 πρὸς οὓς ἀπεκρίθην ὅτι οὐκ ἔστιν ἔθος Ῥωμαίοις χαρίζεσθαί τινα ἄνθρωπον πρὶν ἢ ὁ κατηγορούμενος κατὰ πρόσωπον ἔχοι τοὺς κατηγόρους τόπον τε ἀπολογίας λάβοι περὶ τοῦ ἐγκλήματος.
To whom I answered that it is not the custom of the Romans to give up any man to destruction, before the accused has met the accusers face to face, and has had opportunity to make his defense concerning the matter laid against him.
Noun: Nominative Singular Neuter

Hebrews 10:25 μὴ ἐγκαταλείποντες τὴν ἐπισυναγωγὴν ἑαυτῶν, καθὼς ἔθος τισίν, ἀλλὰ παρακαλοῦντες καὶ τοσούτῳ μᾶλλον ὅσῳ βλέπετε ἐγγίζουσαν τὴν ἡμέραν.
not forsaking our own assembling together, as the custom of some is, but exhorting one another; and so much the more, as you see the Day approaching.
Noun: Nominative Singular Neuter