Matthew 23:8 ὑμεῖς δὲ μὴ κληθῆτε ῥαββί· εἷς γάρ ἐστιν ὑμῶν ὁ διδάσκαλος, πάντες δὲ ὑμεῖς ἀδελφοί ἐστε.
But don't you be called 'Rabbi,' for one is your teacher, the Christ, and all of you are brothers.
Noun: Nominative Singular Masculine

Matthew 26:25 ἀποκριθεὶς δὲ Ἰούδας ὁ παραδιδοὺς αὐτὸν εἶπεν· μήτι ἐγώ εἰμι, ῥαββί; λέγει αὐτῷ σὺ εἶπας.
Judas, who betrayed him, answered, "It isn't me, is it, Rabbi?" He said to him, "You said it."
Noun: Vocative Singular Masculine

Matthew 26:49 καὶ εὐθέως προσελθὼν τῷ Ἰησοῦ εἶπεν· χαῖρε, ῥαββί, καὶ κατεφίλησεν αὐτόν.
Immediately he came to Jesus, and said, "Hail, Rabbi!" and kissed him.
Noun: Vocative Singular Masculine

Mark 9:5 καὶ ἀποκριθεὶς ὁ Πέτρος λέγει τῷ Ἰησοῦ· ῥαββί, καλόν ἐστιν ἡμᾶς ὧδε εἶναι, καὶ ποιήσωμεν τρεῖς σκηνάς, σοὶ μίαν καὶ Μωϋσεῖ μίαν καὶ Ἠλίᾳ μίαν.
Peter answered Jesus, "Rabbi, it is good for us to be here. Let's make three tents: one for you, one for Moses, and one for Elijah."
Noun: Vocative Singular Masculine

Mark 11:21 καὶ ἀναμνησθεὶς ὁ Πέτρος λέγει αὐτῷ· ῥαββί, ἴδε ἡ συκῆ ἣν κατηράσω ἐξήρανται.
Peter, remembering, said to him, "Rabbi, look! The fig tree which you cursed has withered away."
Noun: Vocative Singular Masculine

Mark 14:45 καὶ ἐλθὼν εὐθὺς προσελθὼν αὐτῷ λέγει· ῥαββί, καὶ κατεφίλησεν αὐτόν.
When he had come, immediately he came to him, and said, "Rabbi! Rabbi!" and kissed him.
Noun: Vocative Singular Masculine

John 1:38 στραφεὶς δὲ ὁ Ἰησοῦς καὶ θεασάμενος αὐτοὺς ἀκολουθοῦντας λέγει αὐτοῖς· τί ζητεῖτε; οἱ δὲ εἶπαν αὐτῷ ῥαββί, ὃ λέγεται μεθερμηνευόμενον διδάσκαλε, ποῦ μένεις;
Jesus turned, and saw them following, and said to them, "What are you looking for?" They said to him, "Rabbi" (which is to say, being interpreted, Teacher), "where are you staying?"
Noun: Vocative Singular Masculine

John 1:49 ἀπεκρίθη αὐτῷ Ναθαναήλ· ῥαββί, σὺ εἶ ὁ υἱὸς τοῦ θεοῦ, σὺ βασιλεὺς εἶ τοῦ Ἰσραήλ.
Nathanael answered him, "Rabbi, you are the Son of God! You are King of Israel!"
Noun: Vocative Singular Masculine

John 3:2 οὗτος ἦλθεν πρὸς αὐτὸν νυκτὸς καὶ εἶπεν αὐτῷ· ῥαββί, οἴδαμεν ὅτι ἀπὸ θεοῦ ἐλήλυθας διδάσκαλος· οὐδεὶς γὰρ δύναται ταῦτα τὰ σημεῖα ποιεῖν ἃ σὺ ποιεῖς, ἐὰν μὴ ᾖ ὁ θεὸς μετ' αὐτοῦ.
The same came to him by night, and said to him, "Rabbi, we know that you are a teacher come from God, for no one can do these signs that you do, unless God is with him."
Noun: Vocative Singular Masculine

John 3:26 καὶ ἦλθον πρὸς τὸν Ἰωάννην καὶ εἶπαν αὐτῷ· ῥαββί, ὃς ἦν μετὰ σοῦ πέραν τοῦ Ἰορδάνου, ᾧ σὺ μεμαρτύρηκας, ἴδε οὗτος βαπτίζει καὶ πάντες ἔρχονται πρὸς αὐτόν.
They came to John, and said to him, "Rabbi, he who was with you beyond the Jordan, to whom you have testified, behold, the same baptizes, and everyone is coming to him."
Noun: Vocative Singular Masculine

John 4:31 ἐν τῷ μεταξὺ ἠρώτων αὐτὸν οἱ μαθηταὶ λέγοντες· ῥαββί, φάγε.
In the meanwhile, the disciples urged him, saying, "Rabbi, eat."
Noun: Vocative Singular Masculine

John 6:25 καὶ εὑρόντες αὐτὸν πέραν τῆς θαλάσσης εἶπον αὐτῷ· ῥαββί, πότε ὧδε γέγονας;
When they found him on the other side of the sea, they asked him, "Rabbi, when did you come here?"
Noun: Vocative Singular Masculine

John 9:2 καὶ ἠρώτησαν αὐτὸν οἱ μαθηταὶ αὐτοῦ λέγοντες ῥαββί, τίς ἥμαρτεν, οὗτος ἢ οἱ γονεῖς αὐτοῦ ἵνα τυφλὸς γεννηθῇ;
His disciples asked him, "Rabbi, who sinned, this man or his parents, that he was born blind?"
Noun: Vocative Singular Masculine

John 11:8 λέγουσιν αὐτῷ οἱ μαθηταί· ῥαββί, νῦν ἐζήτουν σε λιθάσαι οἱ Ἰουδαῖοι, καὶ πάλιν ὑπάγεις ἐκεῖ;
The disciples told him, "Rabbi, the Jews were just trying to stone you, and are you going there again?"
Noun: Vocative Singular Masculine