Luke 22:20 καὶ τὸ ποτήριον ὡσαύτως μετὰ τὸ δειπνῆσαι, λέγων· τοῦτο τὸ ποτήριον ἡ καινὴ διαθήκη ἐν τῷ αἵματί μου τὸ ὑπὲρ ὑμῶν ἐκχυννόμενον.
Likewise, he took the cup after supper, saying, "This cup is the new covenant in my blood, which is poured out for you.
Adjective: Nominative Singular Feminine

Acts 17:19 ἐπιλαβόμενοί δὲ / τε αὐτοῦ ἐπὶ τὸν Ἄρειον Πάγον ἤγαγον λέγοντες· δυνάμεθα γνῶναι τίς ἡ καινὴ αὕτη ἡ ὑπὸ σοῦ λαλουμένη διδαχή;
They took hold of him, and brought him to the Areopagus, saying, "May we know what this new teaching is, which is spoken by you?
Adjective: Nominative Singular Feminine

1 Corinthians 11:25 ὡσαύτως καὶ τὸ ποτήριον μετὰ τὸ δειπνῆσαι λέγων· τοῦτο τὸ ποτήριον ἡ καινὴ διαθήκη ἐστὶν ἐν τῷ ἐμῷ αἵματι· τοῦτο ποιεῖτε, ὁσάκις ἐὰν πίνητε εἰς τὴν ἐμὴν ἀνάμνησιν.
In the same way he also took the cup, after supper, saying, "This cup is the new covenant in my blood. Do this, as often as you drink, in memory of me."
Adjective: Nominative Singular Feminine

2 Corinthians 5:17 ὥστε εἴ τις ἐν Χριστῷ, καινὴ κτίσις· τὰ ἀρχαῖα παρῆλθεν, ἰδοὺ γέγονεν καινά·
Therefore if anyone is in Christ, he is a new creation. The old things have passed away. Behold, all things have become new.
Adjective: Nominative Singular Feminine

Galatians 6:15 οὔτε γὰρ περιτομή τί ἐστιν οὔτε ἀκροβυστία ἀλλὰ καινὴ κτίσις.
For in Christ Jesus neither is circumcision anything, nor uncircumcision, but a new creation.
Adjective: Nominative Singular Feminine