Mark 12:14 καὶ ἐλθόντες λέγουσιν αὐτῷ· διδάσκαλε, οἴδαμεν ὅτι ἀληθὴς εἶ καὶ οὐ μέλει σοι περὶ οὐδενός· οὐ γὰρ βλέπεις εἰς πρόσωπον ἀνθρώπων, ἀλλ' ἐπ' ἀληθείας τὴν ὁδὸν τοῦ θεοῦ διδάσκεις· ἔξεστιν δοῦναι κῆνσον Καίσαρι ἢ οὔ; δῶμεν ἢ μὴ δῶμεν;
When they had come, they asked him, "Teacher, we know that you are honest, and don't defer to anyone; for you aren't partial to anyone, but truly teach the way of God. Is it lawful to pay taxes to Caesar, or not?
Adjective: Nominative Singular Masculine

John 3:33 ὁ λαβὼν αὐτοῦ τὴν μαρτυρίαν ἐσφράγισεν ὅτι ὁ θεὸς ἀληθής ἐστιν.
He who has received his witness has set his seal to this, that God is true.
Adjective: Nominative Singular Masculine

John 5:31 ἐὰν ἐγὼ μαρτυρῶ περὶ ἐμαυτοῦ, ἡ μαρτυρία μου οὐκ ἔστιν ἀληθής·
"If I testify about myself, my witness is not valid.
Adjective: Nominative Singular Feminine

John 5:32 ἄλλος ἐστὶν ὁ μαρτυρῶν περὶ ἐμοῦ καὶ οἶδα ὅτι ἀληθής ἐστιν ἡ μαρτυρία ἣν μαρτυρεῖ περὶ ἐμοῦ.
It is another who testifies about me. I know that the testimony which he testifies about me is true.
Adjective: Nominative Singular Feminine

John 6:55 ἡ γὰρ σάρξ μου ἀληθής ἐστιν βρῶσις, καὶ τὸ αἷμά μου ἀληθής ἐστιν πόσις.
For my flesh is food indeed, and my blood is drink indeed.
Adjective: Nominative Singular Feminine

John 6:55 ἡ γὰρ σάρξ μου ἀληθής ἐστιν βρῶσις, καὶ τὸ αἷμά μου ἀληθής ἐστιν πόσις.
For my flesh is food indeed, and my blood is drink indeed.
Adjective: Nominative Singular Feminine

John 7:18 ὁ ἀφ' ἑαυτοῦ λαλῶν τὴν δόξαν τὴν ἰδίαν ζητεῖ· ὁ δὲ ζητῶν τὴν δόξαν τοῦ πέμψαντος αὐτόν οὗτος ἀληθής ἐστιν καὶ ἀδικία ἐν αὐτῷ οὐκ ἔστιν.
He who speaks from himself seeks his own glory, but he who seeks the glory of him who sent him is true, and no unrighteousness is in him.
Adjective: Nominative Singular Masculine

John 8:13 εἶπον οὖν αὐτῷ οἱ Φαρισαῖοι· σὺ περὶ σεαυτοῦ μαρτυρεῖς· ἡ μαρτυρία σου οὐκ ἔστιν ἀληθής.
The Pharisees therefore said to him, "You testify about yourself. Your testimony is not valid."
Adjective: Nominative Singular Feminine

John 8:14 ἀπεκρίθη Ἰησοῦς καὶ εἶπεν αὐτοῖς· κἂν ἐγὼ μαρτυρῶ περὶ ἐμαυτοῦ, ἀληθής ἐστιν ἡ μαρτυρία μου ὅτι οἶδα πόθεν ἦλθον καὶ ποῦ ὑπάγω. ὑμεῖς δὲ οὐκ οἴδατε πόθεν ἔρχομαι ἢ ποῦ ὑπάγω.
Jesus answered them, "Even if I testify about myself, my testimony is true, for I know where I came from, and where I am going; but you don't know where I came from, or where I am going.
Adjective: Nominative Singular Feminine

John 8:17 καὶ ἐν τῷ νόμῳ δὲ τῷ ὑμετέρῳ γέγραπται ὅτι δύο ἀνθρώπων ἡ μαρτυρία ἀληθής ἐστιν.
It's also written in your law that the testimony of two people is valid.
Adjective: Nominative Singular Feminine

John 8:26 πολλὰ ἔχω περὶ ὑμῶν λαλεῖν καὶ κρίνειν ἀλλ' ὁ πέμψας με ἀληθής ἐστιν, κἀγὼ ἃ ἤκουσα παρ' αὐτοῦ ταῦτα λαλῶ εἰς τὸν κόσμον.
I have many things to speak and to judge concerning you. However he who sent me is true; and the things which I heard from him, these I say to the world."
Adjective: Nominative Singular Masculine

John 21:24 Οὗτός ἐστιν ὁ μαθητὴς ὁ μαρτυρῶν περὶ τούτων καὶ ὁ γράψας ταῦτα, καὶ οἴδαμεν ὅτι ἀληθὴς αὐτοῦ ἡ μαρτυρία ἐστίν.
This is the disciple who testifies about these things, and wrote these things. We know that his witness is true.
Adjective: Nominative Singular Feminine

Romans 3:4 μὴ γένοιτο γινέσθω δὲ ὁ θεὸς ἀληθής, πᾶς δὲ ἄνθρωπος ψεύστης καθάπερ / καθὼς γέγραπται· ὅπως ἂν δικαιωθῇς ἐν τοῖς λόγοις σου καὶ νικήσεις ἐν τῷ κρίνεσθαί σε.
May it never be! Yes, let God be found true, but every man a liar. As it is written, "That you might be justified in your words, and might prevail when you come into judgment."
Adjective: Nominative Singular Masculine

Titus 1:13 ἡ μαρτυρία αὕτη ἐστὶν ἀληθής δι' ἣν αἰτίαν ἔλεγχε αὐτοὺς ἀποτόμως, ἵνα ὑγιαίνωσιν ἐν τῇ πίστει,
This testimony is true. For this cause, reprove them sharply, that they may be sound in the faith,
Adjective: Nominative Singular Feminine

3 John 1:12 Δημητρίῳ μεμαρτύρηται ὑπὸ πάντων καὶ ὑπὸ αὐτῆς τῆς ἀληθείας· καὶ ἡμεῖς δὲ μαρτυροῦμεν, καὶ οἶδας ὅτι ἡ μαρτυρία ἡμῶν ἀληθής ἐστιν.
Demetrius has the testimony of all, and of the truth itself; yes, we also testify, and you know that our testimony is true.
Adjective: Nominative Singular Feminine