John 11:28 Καὶ τοῦτο εἰποῦσα ἀπῆλθεν καὶ ἐφώνησεν Μαριὰμ τὴν ἀδελφὴν αὐτῆς λάθρᾳ εἰποῦσα· ὁ διδάσκαλος πάρεστιν καὶ φωνεῖ σε.
When she had said this, she went away, and called Mary, her sister, secretly, saying, "The Teacher is here, and is calling you."
Noun: Accusative Singular Feminine

Romans 16:1 Συνίστημι δὲ ὑμῖν Φοίβην τὴν ἀδελφὴν ἡμῶν, οὖσαν καὶ διάκονον τῆς ἐκκλησίας τῆς ἐν Κεγχρεαῖς,
I commend to you Phoebe, our sister, who is a servant of the assembly that is at Cenchreae,
Noun: Accusative Singular Feminine

Romans 16:15 ἀσπάσασθε Φιλόλογον καὶ Ἰουλίαν, Νηρέα καὶ τὴν ἀδελφὴν αὐτοῦ, καὶ Ὀλυμπᾶν καὶ τοὺς σὺν αὐτοῖς πάντας ἁγίους.
Greet Philologus and Julia, Nereus and his sister, and Olympas, and all the saints who are with them.
Noun: Accusative Singular Feminine

1 Corinthians 9:5 μὴ οὐκ ἔχομεν ἐξουσίαν ἀδελφὴν γυναῖκα περιάγειν ὡς καὶ οἱ λοιποὶ ἀπόστολοι καὶ οἱ ἀδελφοὶ τοῦ κυρίου καὶ Κηφᾶς;
Have we no right to take along a wife who is a believer, even as the rest of the apostles, and the brothers of the Lord, and Cephas?
Noun: Accusative Singular Feminine