Matthew 4:2 καὶ νηστεύσας ἡμέρας τεσσεράκοντα καὶ νύκτας τεσσεράκοντα ὕστερον ἐπείνασεν.
When he had fasted forty days and forty nights, he was hungry afterward.
Adjective: Accusative Plural Feminine

Mark 1:13 καὶ ἦν ἐν τῇ ἐρήμῳ τεσσεράκοντα ἡμέρας πειραζόμενος ὑπὸ τοῦ Σατανᾶ, καὶ ἦν μετὰ τῶν θηρίων καὶ οἱ ἄγγελοι διηκόνουν αὐτῷ. (Καὶ)
He was there in the wilderness forty days tempted by Satan. He was with the wild animals; and the angels were serving him.
Adjective: Accusative Plural Feminine

Luke 4:2 ἡμέρας τεσσεράκοντα πειραζόμενος ὑπὸ τοῦ διαβόλου. καὶ οὐκ ἔφαγεν οὐδὲν ἐν ταῖς ἡμέραις ἐκείναις καὶ συντελεσθεισῶν αὐτῶν ἐπείνασεν.
for forty days, being tempted by the devil. He ate nothing in those days. Afterward, when they were completed, he was hungry.
Adjective: Accusative Plural Feminine

John 2:20 εἶπαν οὖν οἱ Ἰουδαῖοι· τεσσεράκοντα καὶ ἓξ ἔτεσιν οἰκοδομήθη ὁ ναὸς οὗτος, καὶ σὺ ἐν τρισὶν ἡμέραις ἐγερεῖς αὐτόν;
The Jews therefore said, "It took forty-six years to build this temple! Will you raise it up in three days?"
Adjective: Dative Plural Neuter

Acts 1:3 οἷς καὶ παρέστησεν ἑαυτὸν ζῶντα μετὰ τὸ παθεῖν αὐτὸν ἐν πολλοῖς τεκμηρίοις δι' ἡμερῶν τεσσεράκοντα ὀπτανόμενος αὐτοῖς καὶ λέγων τὰ περὶ τῆς βασιλείας τοῦ θεοῦ·
To these he also showed himself alive after he suffered, by many proofs, appearing to them over a period of forty days, and speaking about God's Kingdom.
Adjective: Genitive Plural Feminine

Acts 4:22 ἐτῶν γὰρ ἦν πλειόνων τεσσεράκοντα ὁ ἄνθρωπος ἐφ' ὃν γεγόνει τὸ σημεῖον τοῦτο τῆς ἰάσεως.
For the man on whom this miracle of healing was performed was more than forty years old.
Adjective: Genitive Plural Neuter

Acts 7:30 Καὶ πληρωθέντων ἐτῶν τεσσεράκοντα ὤφθη αὐτῷ ἐν τῇ ἐρήμῳ τοῦ ὄρους Σινᾶ ἄγγελος ἐν φλογὶ πυρὸς βάτου.
"When forty years were fulfilled, an angel of the Lord appeared to him in the wilderness of Mount Sinai, in a flame of fire in a bush.
Adjective: Genitive Plural Neuter

Acts 7:36 οὗτος ἐξήγαγεν αὐτοὺς ποιήσας τέρατα καὶ σημεῖα ἐν τῇ / γῇ Αἰγύπτῳ καὶ ἐν Ἐρυθρᾷ Θαλάσσῃ καὶ ἐν τῇ ἐρήμῳ ἔτη τεσσεράκοντα.
This man led them out, having worked wonders and signs in Egypt, in the Red Sea, and in the wilderness for forty years.
Adjective: Accusative Plural Neuter

Acts 7:42 ἔστρεψεν δὲ ὁ θεὸς καὶ παρέδωκεν αὐτοὺς λατρεύειν τῇ στρατιᾷ τοῦ οὐρανοῦ καθὼς γέγραπται ἐν βίβλῳ τῶν προφητῶν· μὴ σφάγια καὶ θυσίας προσηνέγκατέ μοι ἔτη τεσσεράκοντα ἐν τῇ ἐρήμῳ οἶκος Ἰσραήλ;
But God turned, and gave them up to serve the army of the sky, as it is written in the book of the prophets, 'Did you offer to me slain animals and sacrifices forty years in the wilderness, O house of Israel?
Adjective: Accusative Plural Neuter

Acts 13:21 κἀκεῖθεν ᾐτήσαντο βασιλέα καὶ ἔδωκεν αὐτοῖς ὁ θεὸς τὸν Σαοὺλ υἱὸν Κίς, ἄνδρα ἐκ φυλῆς Βενιαμίν, ἔτη τεσσεράκοντα,
Afterward they asked for a king, and God gave to them Saul the son of Kish, a man of the tribe of Benjamin, for forty years.
Adjective: Accusative Plural Neuter

Acts 23:13 ἦσαν δὲ πλείους τεσσεράκοντα οἱ ταύτην τὴν συνωμοσίαν ποιησάμενοι,
There were more than forty people who had made this conspiracy.
Adjective: Genitive Plural Masculine

Acts 23:21 σὺ οὖν μὴ πεισθῇς αὐτοῖς ἐνεδρεύουσιν γὰρ αὐτὸν ἐξ αὐτῶν ἄνδρες πλείους τεσσεράκοντα, οἵτινες ἀνεθεμάτισαν ἑαυτοὺς μήτε φαγεῖν μήτε πιεῖν ἕως οὗ ἀνέλωσιν αὐτόν, καὶ νῦν εἰσιν ἕτοιμοι προσδεχόμενοι τὴν ἀπὸ σοῦ ἐπαγγελίαν.
Therefore don't yield to them, for more than forty men lie in wait for him, who have bound themselves under a curse neither to eat nor to drink until they have killed him. Now they are ready, looking for the promise from you."
Adjective: Genitive Plural Masculine

2 Corinthians 11:24 ὑπὸ Ἰουδαίων πεντάκις τεσσεράκοντα παρὰ μίαν ἔλαβον,
Five times from the Jews I received forty stripes minus one.
Adjective: Accusative Plural Feminine

Hebrews 3:10 τεσσεράκοντα ἔτη· διὸ προσώχθισα τῇ γενεᾷ ταύτῃ καὶ εἶπον. ἀεὶ πλανῶνται τῇ καρδίᾳ αὐτοὶ δὲ οὐκ ἔγνωσαν τὰς ὁδούς μου,
Therefore I was displeased with that generation, and said, 'They always err in their heart, but they didn't know my ways;'
Adjective: Accusative Plural Neuter

Hebrews 3:17 τίσιν δὲ προσώχθισεν τεσσεράκοντα ἔτη; οὐχὶ τοῖς ἁμαρτήσασιν, ὧν τὰ κῶλα ἔπεσεν ἐν τῇ ἐρήμῳ;
With whom was he displeased forty years? Wasn't it with those who sinned, whose bodies fell in the wilderness?
Adjective: Accusative Plural Neuter

Revelation 7:4 καὶ ἤκουσα τὸν ἀριθμὸν τῶν ἐσφραγισμένων, ἑκατὸν τεσσεράκοντα τέσσαρες χιλιάδες, ἐσφραγισμένοι ἐκ πάσης φυλῆς υἱῶν Ἰσραήλ.
I heard the number of those who were sealed, one hundred forty-four thousand, sealed out of every tribe of the children of Israel:
Adjective: Nominative Plural Feminine

Revelation 11:2 καὶ τὴν αὐλὴν τὴν ἔξωθεν τοῦ ναοῦ ἔκβαλε ἔξωθεν καὶ μὴ αὐτὴν μετρήσῃς, ὅτι ἐδόθη τοῖς ἔθνεσιν καὶ τὴν πόλιν τὴν ἁγίαν πατήσουσιν μῆνας τεσσεράκοντα καὶ δύο.
Leave out the court which is outside of the temple, and don't measure it, for it has been given to the nations. They will tread the holy city under foot for forty-two months.
Adjective: Accusative Plural Masculine

Revelation 13:5 Καὶ ἐδόθη αὐτῷ στόμα λαλοῦν μεγάλα καὶ βλασφημίας καὶ ἐδόθη αὐτῷ ἐξουσία ποιῆσαι μῆνας τεσσεράκοντα καὶ δύο.
A mouth speaking great things and blasphemy was given to him. Authority to make war for forty-two months was given to him.
Adjective: Accusative Plural Masculine

Revelation 14:1 Καὶ εἶδον, καὶ ἰδοὺ τὸ ἀρνίον ἑστὸς ἐπὶ τὸ ὄρος Σιών καὶ μετ' αὐτοῦ ἑκατὸν τεσσεράκοντα τέσσαρες χιλιάδες ἔχουσαι τὸ ὄνομα αὐτοῦ καὶ τὸ ὄνομα τοῦ πατρὸς αὐτοῦ γεγραμμένον ἐπὶ τῶν μετώπων αὐτῶν.
I saw, and behold, the Lamb standing on Mount Zion, and with him a number, one hundred forty-four thousand, having his name, and the name of his Father, written on their foreheads.
Adjective: Nominative Plural Feminine

Revelation 14:3 καὶ ᾄδουσιν ὡς ᾠδὴν καινὴν ἐνώπιον τοῦ θρόνου καὶ ἐνώπιον τῶν τεσσάρων ζῴων καὶ τῶν πρεσβυτέρων, καὶ οὐδεὶς ἐδύνατο μαθεῖν τὴν ᾠδὴν εἰ μὴ αἱ ἑκατὸν τεσσεράκοντα τέσσαρες χιλιάδες οἱ ἠγορασμένοι ἀπὸ τῆς γῆς.
They sing a new song before the throne, and before the four living creatures and the elders. No one could learn the song except the one hundred forty-four thousand, those who had been redeemed out of the earth.
Adjective: Nominative Plural Feminine

Revelation 21:17 καὶ ἐμέτρησεν τὸ τεῖχος αὐτῆς ἑκατὸν τεσσεράκοντα τεσσάρων πηχῶν μέτρον ἀνθρώπου, ὅ ἐστιν ἀγγέλου.
Its wall is one hundred forty-four cubits, by the measure of a man, that is, of an angel.
Adjective: Genitive Plural Masculine