Mark 1:4 ἐγένετο Ἰωάννης ὁ βαπτίζων ἐν τῇ ἐρήμῳ [καὶ] κηρύσσων βάπτισμα μετανοίας εἰς ἄφεσιν ἁμαρτιῶν.
John came baptizing in the wilderness and preaching the baptism of repentance for forgiveness of sins.
Noun: Genitive Singular Feminine

Luke 3:3 καὶ ἦλθεν εἰς πᾶσαν [τὴν] περίχωρον τοῦ Ἰορδάνου κηρύσσων βάπτισμα μετανοίας εἰς ἄφεσιν ἁμαρτιῶν,
He came into all the region around the Jordan, preaching the baptism of repentance for remission of sins.
Noun: Genitive Singular Feminine

Luke 3:8 ποιήσατε οὖν καρποὺς ἀξίους τῆς μετανοίας καὶ μὴ ἄρξησθε λέγειν ἐν ἑαυτοῖς· πατέρα ἔχομεν τὸν Ἀβραάμ. λέγω γὰρ ὑμῖν ὅτι δύναται ὁ θεὸς ἐκ τῶν λίθων τούτων ἐγεῖραι τέκνα τῷ Ἀβραάμ.
Bring forth therefore fruits worthy of repentance, and don't begin to say among yourselves, 'We have Abraham for our father;' for I tell you that God is able to raise up children to Abraham from these stones!
Noun: Genitive Singular Feminine

Luke 15:7 λέγω ὑμῖν ὅτι οὕτως χαρὰ ἐν τῷ οὐρανῷ ἔσται ἐπὶ ἑνὶ ἁμαρτωλῷ μετανοοῦντι ἢ ἐπὶ ἐνενήκοντα ἐννέα δικαίοις οἵτινες οὐ χρείαν ἔχουσιν μετανοίας.
I tell you that even so there will be more joy in heaven over one sinner who repents, than over ninety-nine righteous people who need no repentance.
Noun: Genitive Singular Feminine

Acts 13:24 προκηρύξαντος Ἰωάννου πρὸ προσώπου τῆς εἰσόδου αὐτοῦ βάπτισμα μετανοίας παντὶ τῷ λαῷ Ἰσραήλ.
before his coming, when John had first preached the baptism of repentance to Israel.
Noun: Genitive Singular Feminine

Acts 19:4 εἶπεν δὲ Παῦλος· Ἰωάννης ἐβάπτισεν βάπτισμα μετανοίας τῷ λαῷ λέγων εἰς τὸν ἐρχόμενον μετ' αὐτὸν ἵνα πιστεύσωσιν, τοῦτ' ἔστιν εἰς τὸν Ἰησοῦν.
Paul said, "John indeed baptized with the baptism of repentance, saying to the people that they should believe in the one who would come after him, that is, in Jesus."
Noun: Genitive Singular Feminine

Acts 26:20 ἀλλὰ τοῖς ἐν Δαμασκῷ πρῶτόν τε καὶ Ἱεροσολύμοις, πᾶσάν τε τὴν χώραν τῆς Ἰουδαίας καὶ τοῖς ἔθνεσιν ἀπήγγελλον μετανοεῖν καὶ ἐπιστρέφειν ἐπὶ τὸν θεόν, ἄξια τῆς μετανοίας ἔργα πράσσοντας.
but declared first to them of Damascus, at Jerusalem, and throughout all the country of Judea, and also to the Gentiles, that they should repent and turn to God, doing works worthy of repentance.
Noun: Genitive Singular Feminine

Hebrews 6:1 Διὸ ἀφέντες τὸν τῆς ἀρχῆς τοῦ Χριστοῦ λόγον ἐπὶ τὴν τελειότητα φερώμεθα, μὴ πάλιν θεμέλιον καταβαλλόμενοι μετανοίας ἀπὸ νεκρῶν ἔργων καὶ πίστεως ἐπὶ θεόν,
Therefore leaving the teaching of the first principles of Christ, let us press on to perfection--not laying again a foundation of repentance from dead works, of faith toward God,
Noun: Genitive Singular Feminine

Hebrews 12:17 ἴστε γὰρ ὅτι καὶ μετέπειτα θέλων κληρονομῆσαι τὴν εὐλογίαν ἀπεδοκιμάσθη, μετανοίας γὰρ τόπον οὐχ εὗρεν καίπερ μετὰ δακρύων ἐκζητήσας αὐτήν.
For you know that even when he afterward desired to inherit the blessing, he was rejected, for he found no place for a change of mind though he sought it diligently with tears.
Noun: Genitive Singular Feminine