Matthew 13:39 ὁ δὲ ἐχθρὸς ὁ σπείρας αὐτά ἐστιν ὁ διάβολος, ὁ δὲ θερισμὸς συντέλεια αἰῶνός ἐστιν. οἱ δὲ θερισταὶ ἄγγελοί εἰσιν.
The enemy who sowed them is the devil. The harvest is the end of the age, and the reapers are angels.
Noun: Nominative Singular Masculine

Mark 4:29 ὅταν δὲ παραδοῖ ὁ καρπός, εὐθὺς ἀποστέλλει τὸ δρέπανον, ὅτι παρέστηκεν ὁ θερισμός.
But when the fruit is ripe, immediately he puts forth the sickle, because the harvest has come."
Noun: Nominative Singular Masculine

Luke 10:2 ἔλεγεν δὲ πρὸς αὐτούς· ὁ μὲν θερισμὸς πολύς, οἱ δὲ ἐργάται ὀλίγοι· δεήθητε οὖν τοῦ κυρίου τοῦ θερισμοῦ ὅπως ἐργάτας ἐκβάλῃ εἰς τὸν θερισμὸν αὐτοῦ.
Then he said to them, "The harvest is indeed plentiful, but the laborers are few. Pray therefore to the Lord of the harvest, that he may send out laborers into his harvest.
Noun: Nominative Singular Masculine

John 4:35 οὐχ ὑμεῖς λέγετε ὅτι ἔτι τετράμηνός ἐστιν καὶ ὁ θερισμὸς ἔρχεται; ἰδοὺ λέγω ὑμῖν ἐπάρατε τοὺς ὀφθαλμοὺς ὑμῶν καὶ θεάσασθε τὰς χώρας ὅτι λευκαί εἰσιν πρὸς θερισμόν. ἤδη
Don't you say, 'There are yet four months until the harvest?' Behold, I tell you, lift up your eyes, and look at the fields, that they are white for harvest already.
Noun: Nominative Singular Masculine

Revelation 14:15 καὶ ἄλλος ἄγγελος ἐξῆλθεν ἐκ τοῦ ναοῦ κράζων ἐν φωνῇ μεγάλῃ τῷ καθημένῳ ἐπὶ τῆς νεφέλης, πέμψον τὸ δρέπανόν σου καὶ θέρισον, ὅτι ἦλθεν ἡ ὥρα θερίσαι, ὅτι ἐξηράνθη ὁ θερισμὸς τῆς γῆς.
Another angel came out from the temple, crying with a loud voice to him who sat on the cloud, "Send forth your sickle, and reap; for the hour to reap has come; for the harvest of the earth is ripe!"
Noun: Nominative Singular Masculine