The Prologue of the Gospel of John seems like two documents merged into one or one original document with commentary. When I read it I see John 1:6-8, 15, 19ff. as original with 1:1-5, 9-14, 16-18 as inserted commentary. This would mean an earlier version of the Gospel began by addressing concerns around the identity of John the Baptist before a fuller text was developed or a pre-existent creedal statement concerning the Logos was inserted. I have created a PDF where I highlighted in red font all of the text from John 1 that seem original prior to the merger: download LePort. John 1 in NA27 and NASB .
Also, I have placed the NA27 text alongside the NASB after the jump if you prefer to glance at it here. Let me know your thoughts.
|1 Ἐν ἀρχῇ ἦν ὁ λόγος, καὶ ὁ λόγος ἦν πρὸς τὸν θεόν, καὶ θεὸς ἦν ὁ λόγος. 2 οὗτος ἦν ἐν ἀρχῇ πρὸς τὸν θεόν. 3 πάντα διʼ αὐτοῦ ἐγένετο, καὶ χωρὶς αὐτοῦ ἐγένετο οὐδὲ ἕν. ὃ γέγονεν 4 ἐν αὐτῷ ζωὴ ἦν, καὶ ἡ ζωὴ ἦν τὸ φῶς τῶν ἀνθρώπων· 5 καὶ τὸ φῶς ἐν τῇ σκοτίᾳ φαίνει, καὶ ἡ σκοτία αὐτὸ οὐ κατέλαβεν.6 Ἐγένετο ἄνθρωπος, ἀπεσταλμένος παρὰ θεοῦ, ὄνομα αὐτῷ Ἰωάννης· 7 οὗτος ἦλθεν εἰς μαρτυρίαν ἵνα μαρτυρήσῃ περὶ τοῦ φωτός, ἵνα πάντες πιστεύσωσιν διʼ αὐτοῦ. 8 οὐκ ἦν ἐκεῖνος τὸ φῶς, ἀλλʼ ἵνα μαρτυρήσῃ περὶ τοῦ φωτός.9 ῏Ην τὸ φῶς τὸ ἀληθινόν, ὃ φωτίζει πάντα ἄνθρωπον, ἐρχόμενον εἰς τὸν κόσμον. 10 ἐν τῷ κόσμῳ ἦν, καὶ ὁ κόσμος διʼ αὐτοῦ ἐγένετο, καὶ ὁ κόσμος αὐτὸν οὐκ ἔγνω. 11 εἰς τὰ ἴδια ἦλθεν, καὶ οἱ ἴδιοι αὐτὸν οὐ παρέλαβον. 12 ὅσοι δὲ ἔλαβον αὐτόν, ἔδωκεν αὐτοῖς ἐξουσίαν τέκνα θεοῦ γενέσθαι, τοῖς πιστεύουσιν εἰς τὸ ὄνομα αὐτοῦ, 13 οἳ οὐκ ἐξ αἱμάτων οὐδὲ ἐκ θελήματος σαρκὸς οὐδὲ ἐκ θελήματος ἀνδρὸς ἀλλʼ ἐκ θεοῦ ἐγεννήθησαν.
14 Καὶ ὁ λόγος σὰρξ ἐγένετο καὶ ἐσκήνωσεν ἐν ἡμῖν, καὶ ἐθεασάμεθα τὴν δόξαν αὐτοῦ, δόξαν ὡς μονογενοῦς παρὰ πατρός, πλήρης χάριτος καὶ ἀληθείας. 15 Ἰωάννης μαρτυρεῖ περὶ αὐτοῦ καὶ κέκραγεν λέγων· οὗτος ἦν ὃν εἶπον· ὁ ὀπίσω μου ἐρχόμενος ἔμπροσθέν μου γέγονεν, ὅτι πρῶτός μου ἦν. 16 ὅτι ἐκ τοῦ πληρώματος αὐτοῦ ἡμεῖς πάντες ἐλάβομεν καὶ χάριν ἀντὶ χάριτος· 17 ὅτι ὁ νόμος διὰ Μωϋσέως ἐδόθη, ἡ χάρις καὶ ἡ ἀλήθεια διὰ Ἰησοῦ Χριστοῦ ἐγένετο. 18 Θεὸν οὐδεὶς ἑώρακεν πώποτε· μονογενὴς θεὸς ὁ ὢν εἰς τὸν κόλπον τοῦ πατρὸς ἐκεῖνος ἐξηγήσατο.
19 Καὶ αὕτη ἐστὶν ἡ μαρτυρία τοῦ Ἰωάννου, ὅτε ἀπέστειλαν [πρὸς αὐτὸν] οἱ Ἰουδαῖοι ἐξ Ἱεροσολύμων ἱερεῖς καὶ Λευίτας ἵνα ἐρωτήσωσιν αὐτόν· σὺ τίς εἶ; 20 καὶ ὡμολόγησεν καὶ οὐκ ἠρνήσατο, καὶ ὡμολόγησεν ὅτι ἐγὼ οὐκ εἰμὶ ὁ χριστός. 21 καὶ ἠρώτησαν αὐτόν· τί οὖν; σὺ Ἠλίας εἶ; καὶ λέγει· οὐκ εἰμί. ὁ προφήτης εἶ σύ; καὶ ἀπεκρίθη· οὔ. 22 εἶπαν οὖν αὐτῷ· τίς εἶ; ἵνα ἀπόκρισιν δῶμεν τοῖς πέμψασιν ἡμᾶς· τί λέγεις περὶ σεαυτοῦ; 23 ἔφη·
ἐγὼ φωνὴ βοῶντος ἐν τῇ ἐρήμῳ·
εὐθύνατε τὴν ὁδὸν κυρίου,
καθὼς εἶπεν Ἠσαΐας ὁ προφήτης.
24 Καὶ ἀπεσταλμένοι ἦσαν ἐκ τῶν Φαρισαίων. 25 καὶ ἠρώτησαν αὐτὸν καὶ εἶπαν αὐτῷ· τί οὖν βαπτίζεις εἰ σὺ οὐκ εἶ ὁ χριστὸς οὐδὲ Ἠλίας οὐδὲ ὁ προφήτης; 26 ἀπεκρίθη αὐτοῖς ὁ Ἰωάννης λέγων· ἐγὼ βαπτίζω ἐν ὕδατι· μέσος ὑμῶν ἕστηκεν ὃν ὑμεῖς οὐκ οἴδατε, 27 ὁ ὀπίσω μου ἐρχόμενος, οὗ οὐκ εἰμὶ [ἐγὼ] ἄξιος ἵνα λύσω αὐτοῦ τὸν ἱμάντα τοῦ ὑποδήματος. 28 ταῦτα ἐν Βηθανίᾳ ἐγένετο πέραν τοῦ Ἰορδάνου, ὅπου ἦν ὁ Ἰωάννης βαπτίζων.
29 Τῇ ἐπαύριον βλέπει τὸν Ἰησοῦν ἐρχόμενον πρὸς αὐτὸν καὶ λέγει· ἴδε ὁ ἀμνὸς τοῦ θεοῦ ὁ αἴρων τὴν ἁμαρτίαν τοῦ κόσμου. 30 οὗτός ἐστιν ὑπὲρ οὗ ἐγὼ εἶπον· ὀπίσω μου ἔρχεται ἀνὴρ ὃς ἔμπροσθέν μου γέγονεν, ὅτι πρῶτός μου ἦν. 31 κἀγὼ οὐκ ᾔδειν αὐτόν, ἀλλʼ ἵνα φανερωθῇ τῷ Ἰσραὴλ διὰ τοῦτο ἦλθον ἐγὼ ἐν ὕδατι βαπτίζων. 32 Καὶ ἐμαρτύρησεν Ἰωάννης λέγων ὅτι τεθέαμαι τὸ πνεῦμα καταβαῖνον ὡς περιστερὰν ἐξ οὐρανοῦ καὶ ἔμεινεν ἐπʼ αὐτόν. 33 κἀγὼ οὐκ ᾔδειν αὐτόν, ἀλλʼ ὁ πέμψας με βαπτίζειν ἐν ὕδατι ἐκεῖνός μοι εἶπεν· ἐφʼ ὃν ἂν ἴδῃς τὸ πνεῦμα καταβαῖνον καὶ μένον ἐπʼ αὐτόν, οὗτός ἐστιν ὁ βαπτίζων ἐν πνεύματι ἁγίῳ. 34 κἀγὼ ἑώρακα καὶ μεμαρτύρηκα ὅτι οὗτός ἐστιν ὁ υἱὸς τοῦ θεοῦ.
35 Τῇ ἐπαύριον πάλιν εἱστήκει ὁ Ἰωάννης καὶ ἐκ τῶν μαθητῶν αὐτοῦ δύο 36 καὶ ἐμβλέψας τῷ Ἰησοῦ περιπατοῦντι λέγει· ἴδε ὁ ἀμνὸς τοῦ θεοῦ. 37 καὶ ἤκουσαν οἱ δύο μαθηταὶ αὐτοῦ λαλοῦντος καὶ ἠκολούθησαν τῷ Ἰησοῦ. 38 στραφεὶς δὲ ὁ Ἰησοῦς καὶ θεασάμενος αὐτοὺς ἀκολουθοῦντας λέγει αὐτοῖς· τί ζητεῖτε; οἱ δὲ εἶπαν αὐτῷ· ῥαββί, ὃ λέγεται μεθερμηνευόμενον διδάσκαλε, ποῦ μένεις; 39 λέγει αὐτοῖς· ἔρχεσθε καὶ ὄψεσθε. ἦλθαν οὖν καὶ εἶδαν ποῦ μένει καὶ παρʼ αὐτῷ ἔμειναν τὴν ἡμέραν ἐκείνην· ὥρα ἦν ὡς δεκάτη. 40 ῏Ην Ἀνδρέας ὁ ἀδελφὸς Σίμωνος Πέτρου εἷς ἐκ τῶν δύο τῶν ἀκουσάντων παρὰ Ἰωάννου καὶ ἀκολουθησάντων αὐτῷ· 41 εὑρίσκει οὗτος πρῶτον τὸν ἀδελφὸν τὸν ἴδιον Σίμωνα καὶ λέγει αὐτῷ· εὑρήκαμεν τὸν Μεσσίαν, ὅ ἐστιν μεθερμηνευόμενον χριστός. 42 ἤγαγεν αὐτὸν πρὸς τὸν Ἰησοῦν. ἐμβλέψας αὐτῷ ὁ Ἰησοῦς εἶπεν· σὺ εἶ Σίμων ὁ υἱὸς Ἰωάννου, σὺ κληθήσῃ Κηφᾶς, ὃ ἑρμηνεύεται Πέτρος.
43 Τῇ ἐπαύριον ἠθέλησεν ἐξελθεῖν εἰς τὴν Γαλιλαίαν καὶ εὑρίσκει Φίλιππον. καὶ λέγει αὐτῷ ὁ Ἰησοῦς· ἀκολούθει μοι. 44 ἦν δὲ ὁ Φίλιππος ἀπὸ Βηθσαϊδά, ἐκ τῆς πόλεως Ἀνδρέου καὶ Πέτρου. 45 εὑρίσκει Φίλιππος τὸν Ναθαναὴλ καὶ λέγει αὐτῷ· ὃν ἔγραψεν Μωϋσῆς ἐν τῷ νόμῳ καὶ οἱ προφῆται εὑρήκαμεν, Ἰησοῦν υἱὸν τοῦ Ἰωσὴφ τὸν ἀπὸ Ναζαρέτ. 46 καὶ εἶπεν αὐτῷ Ναθαναήλ· ἐκ Ναζαρὲτ δύναταί τι ἀγαθὸν εἶναι; λέγει αὐτῷ [ὁ] Φίλιππος· ἔρχου καὶ ἴδε. 47 εἶδεν ὁ Ἰησοῦς τὸν Ναθαναὴλ ἐρχόμενον πρὸς αὐτὸν καὶ λέγει περὶ αὐτοῦ· ἴδε ἀληθῶς Ἰσραηλίτης ἐν ᾧ δόλος οὐκ ἔστιν. 48 λέγει αὐτῷ Ναθαναήλ· πόθεν με γινώσκεις; ἀπεκρίθη Ἰησοῦς καὶ εἶπεν αὐτῷ· πρὸ τοῦ σε Φίλιππον φωνῆσαι ὄντα ὑπὸ τὴν συκῆν εἶδόν σε. 49 ἀπεκρίθη αὐτῷ Ναθαναήλ· ῥαββί, σὺ εἶ ὁ υἱὸς τοῦ θεοῦ, σὺ βασιλεὺς εἶ τοῦ Ἰσραήλ. 50 ἀπεκρίθη Ἰησοῦς καὶ εἶπεν αὐτῷ· ὅτι εἶπόν σοι ὅτι εἶδόν σε ὑποκάτω τῆς συκῆς, πιστεύεις; μείζω τούτων ὄψῃ. 51 καὶ λέγει αὐτῷ· ἀμὴν ἀμὴν λέγω ὑμῖν, ὄψεσθε τὸν οὐρανὸν ἀνεῳγότα καὶ τοὺς ἀγγέλους τοῦ θεοῦ ἀναβαίνοντας καὶ καταβαίνοντας ἐπὶ τὸν υἱὸν τοῦ ἀνθρώπου.
| 1 In the beginning was the Word, and the Word was with God, and the Word was God. 2 He was in the beginning with God. 3 All things came into being through Him, and apart from Him nothing came into being that has come into being. 4 In Him was life, and the life was the Light of men. 5 The Light shines in the darkness, and the darkness did not comprehend it.6 There came a man sent from God, whose name was John. 7 He came as a witness, to testify about the Light, so that all might believe through him. 8 He was not the Light, but he came to testify about the Light.9 There was the true Light which, coming into the world, enlightens every man. 10 He was in the world, and the world was made through Him, and the world did not know Him. 11 He came to His own, and those who were His own did not receive Him. 12 But as many as received Him, to them He gave the right to become children of God, even to those who believe in His name, 13 who were born, not of blood nor of the will of the flesh nor of the will of man, but of God. 14 And the Word became flesh, and dwelt among us, and we saw His glory, glory as of the only begotten from the Father, full of grace and truth. 15 John testified about Him and cried out, saying, “This was He of whom I said, ‘He who comes after me has a higher rank than I, for He existed before me.’ ” 16 For of His fullness we have all received, and grace upon grace. 17 For the Law was given through Moses; grace and truth were realized through Jesus Christ. 18 No one has seen God at any time; the only begotten God who is in the bosom of the Father, He has explained Him.
19 This is the testimony of John, when the Jews sent to him priests and Levites from Jerusalem to ask him, “Who are you?” 20 And he confessed and did not deny, but confessed, “I am not the Christ.” 21 They asked him, “What then? Are you Elijah?” And he said, “I am not.” “Are you the Prophet?” And he answered, “No.” 22 Then they said to him, “Who are you, so that we may give an answer to those who sent us? What do you say about yourself?” 23 He said, “I am a voice of one crying in the wilderness, ‘Make straight the way of the Lord,’ as Isaiah the prophet said.”
24 Now they had been sent from the Pharisees. 25 They asked him, and said to him, “Why then are you baptizing, if you are not the Christ, nor Elijah, nor the Prophet?” 26 John answered them saying, “I baptize in water, but among you stands One whom you do not know. 27 “It is He who comes after me, the thong of whose sandal I am not worthy to untie.” 28 These things took place in Bethany beyond the Jordan, where John was baptizing.
29 The next day he saw Jesus coming to him and said, “Behold, the Lamb of God who takes away the sin of the world! 30 “This is He on behalf of whom I said, ‘After me comes a Man who has a higher rank than I, for He existed before me.’ 31 “I did not recognize Him, but so that He might be manifested to Israel, I came baptizing in water.” 32 John testified saying, “I have seen the Spirit descending as a dove out of heaven, and He remained upon Him. 33 “I did not recognize Him, but He who sent me to baptize in water said to me, ‘He upon whom you see the Spirit descending and remaining upon Him, this is the One who baptizes in the Holy Spirit.’ 34 “I myself have seen, and have testified that this is the Son of God.”
35 Again the next day John was standing with two of his disciples, 36 and he looked at Jesus as He walked, and said, “Behold, the Lamb of God!” 37 The two disciples heard him speak, and they followed Jesus. 38 And Jesus turned and saw them following, and said to them, “What do you seek?” They said to Him, “Rabbi (which translated means Teacher), where are You staying?” 39 He said to them, “Come, and you will see.” So they came and saw where He was staying; and they stayed with Him that day, for it was about the tenth hour. 40 One of the two who heard John speak and followed Him, was Andrew, Simon Peter’s brother. 41 He found first his own brother Simon and said to him, “We have found the Messiah” (which translated means Christ). 42 He brought him to Jesus. Jesus looked at him and said, “You are Simon the son of John; you shall be called Cephas” (which is translated Peter).
43 The next day He purposed to go into Galilee, and He found Philip. And Jesus said to him, “Follow Me.” 44 Now Philip was from Bethsaida, of the city of Andrew and Peter. 45 Philip found Nathanael and said to him, “We have found Him of whom Moses in the Law and also the Prophets wrote—Jesus of Nazareth, the son of Joseph.” 46 Nathanael said to him, “Can any good thing come out of Nazareth?” Philip said to him, “Come and see.” 47 Jesus saw Nathanael coming to Him, and said of him, “Behold, an Israelite indeed, in whom there is no deceit!” 48 Nathanael said to Him, “How do You know me?” Jesus answered and said to him, “Before Philip called you, when you were under the fig tree, I saw you.” 49 Nathanael answered Him, “Rabbi, You are the Son of God; You are the King of Israel.” 50 Jesus answered and said to him, “Because I said to you that I saw you under the fig tree, do you believe? You will see greater things than these.” 51 And He said to him, “Truly, truly, I say to you, you will see the heavens opened and the angels of God ascending and descending on the Son of Man.” 
 Barbara Aland, Kurt Aland, Matthew Black et al., The Greek New Testament, 4th ed., 247-51 (Federal Republic of Germany: United Bible Societies, 1993).
 New American Standard Bible: 1995 Update, Jn 1:1–51 (LaHabra, CA: The Lockman Foundation, 1995).