Baley,
One well-known example illustrating how the lack of punctuation in ancient Greek texts will affect our understanding of those texts is in John 3, concerning the Pharisee Nicodemus' clandestine visit to Jesus.
9 Nicodemus said to him, “How can these things be?” 10 Jesus answered him, “Are you the teacher of Israel, and yet you do not understand these things?
11 “Very truly, I tell you, we speak of what we know and testify to what we have seen, yet you do not receive our testimony. 12 If I have told you about earthly things and you do not believe, how can you believe if I tell you about heavenly things? 13 No one has ascended into heaven except the one who descended from heaven, the Son of Man. 14 And just as Moses lifted up the serpent in the wilderness, so must the Son of Man be lifted up, 15 that whoever believes in him may have eternal life.
16 “For God so loved the world that he gave his only Son, so that everyone who believes in him may not perish but may have eternal life.
17 “Indeed, God did not send the Son into the world to condemn the world but in order that the world might be saved through him. 18 Those who believe in him are not condemned, but those who do not believe are condemned already because they have not believed in the name of the only Son of God. 19 And this is the judgment, that the light has come into the world, and people loved darkness rather than light because their deeds were evil. 20 For all who do evil hate the light and do not come to the light, so that their deeds may not be exposed. 21 But those who do what is true come to the light, so that it may be clearly seen that their deeds have been done in God.”
22 After this Jesus and his disciples went into the region of Judea, and he spent some time there with them and baptized.
11 “Very truly, I tell you, we speak of what we know and testify to what we have seen, yet you do not receive our testimony. 12 If I have told you about earthly things and you do not believe, how can you believe if I tell you about heavenly things? 13 No one has ascended into heaven except the one who descended from heaven, the Son of Man. 14 And just as Moses lifted up the serpent in the wilderness, so must the Son of Man be lifted up, 15 that whoever believes in him may have eternal life.
16 “For God so loved the world that he gave his only Son, so that everyone who believes in him may not perish but may have eternal life.
17 “Indeed, God did not send the Son into the world to condemn the world but in order that the world might be saved through him. 18 Those who believe in him are not condemned, but those who do not believe are condemned already because they have not believed in the name of the only Son of God. 19 And this is the judgment, that the light has come into the world, and people loved darkness rather than light because their deeds were evil. 20 For all who do evil hate the light and do not come to the light, so that their deeds may not be exposed. 21 But those who do what is true come to the light, so that it may be clearly seen that their deeds have been done in God.”
22 After this Jesus and his disciples went into the region of Judea, and he spent some time there with them and baptized.
Jesus is introduced as the speaker in v. 10, and a a new pericope is introduced in v. 22 narrating what Jesus and his disciples did next in the third person. But are we meant to understand that Jesus was the speaker from v. 10 through verse 21? And if not, where does he stop talking? Different translators and commentators give different answers.
Verses 11-12 are in the first person, so Jesus is still speaking there. In verses 13-14, the speaker refers to Jesus as 'the Son of Man', and, as Jesus is known to refer to himself that way elsewhere, those verses are usually ascribed to Jesus as well.
That leaves John 3.16 - 3.21. Who is speaking in those verses? We do not really know. It could be Jesus or the narrator of John. It sounds a lot like the narrator of John sounds in the prologue to the gospel in John 1.1-18:
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 without him not one thing came into being. What has come into being 4 in him was life, and the life was the light of all people. 5 The light shines in the darkness, and the darkness did not overtake it.
6 There was a man sent from God whose name was John. 7 He came as a witness to testify to the light, so that all might believe through him. 8 He himself was not the light, but he came to testify to the light. 9 The true light, which enlightens everyone, was coming into the world.
10 He was in the world, and the world came into being through him, yet the world did not know him. 11 He came to what was his own, and his own people did not accept him. 12 But to all who received him, who believed in his name, he gave power to become children of God, 13 who were born, not of blood or of the will of the flesh or of the will of man, but of God.
14 And the Word became flesh and lived among us, and we have seen his glory, the glory as of a father’s only son, full of grace and truth. 15 (John testified to him and cried out, “This was he of whom I said, ‘He who comes after me ranks ahead of me because he was before me.’ ”) 16 From his fullness we have all received, grace upon grace. 17 The law indeed was given through Moses; grace and truth came through Jesus Christ. 18 No one has ever seen God. It is the only Son, himself God, who is close to the Father’s heart, who has made him known.
6 There was a man sent from God whose name was John. 7 He came as a witness to testify to the light, so that all might believe through him. 8 He himself was not the light, but he came to testify to the light. 9 The true light, which enlightens everyone, was coming into the world.
10 He was in the world, and the world came into being through him, yet the world did not know him. 11 He came to what was his own, and his own people did not accept him. 12 But to all who received him, who believed in his name, he gave power to become children of God, 13 who were born, not of blood or of the will of the flesh or of the will of man, but of God.
14 And the Word became flesh and lived among us, and we have seen his glory, the glory as of a father’s only son, full of grace and truth. 15 (John testified to him and cried out, “This was he of whom I said, ‘He who comes after me ranks ahead of me because he was before me.’ ”) 16 From his fullness we have all received, grace upon grace. 17 The law indeed was given through Moses; grace and truth came through Jesus Christ. 18 No one has ever seen God. It is the only Son, himself God, who is close to the Father’s heart, who has made him known.
This is a problem for the interpretation of John. What are the implications of the fact that the voice of the narrator and the voice of Jesus sound so much alike that we really can't tell them apart?
Best,
Ken