20 Now there were some Greeks among those who went up to worship at the Feast. 21 They came to Philip, who was from Bethsaida in Galilee, with a request. "Sir," they said, "we would like to see Jesus." 22 Philip went to tell Andrew; Andrew and Philip in turn told Jesus.
23 Jesus replied, "The hour has come for the Son of Man to be glorified. 24 I tell you the truth, unless a kernel of wheat falls to the ground and dies, it remains only a single seed. But if it dies, it produces many seeds. 25 The man who loves his life will lose it, while the man who hates his life in this world will keep it for eternal life. 26 Whoever serves me must follow me; and where I am, my servant also will be. My Father will honor the one who serves me.
27 "Now my heart is troubled, and what shall I say? 'Father, save me from this hour'? No, it was for this very reason I came to this hour. 28 Father, glorify your name!"
Ask 100 people why Jesus came. 100 answers. The answer is right here. There is no, "What most scholars believe..." nor "well, my personal belief is..." Jesus very clearly tells us that the reason He came was to die.
Then a voice came from heaven, "I have glorified it, and will glorify it again." 29 The crowd that was there and heard it said it had thundered; others said an angel had spoken to him.
30 Jesus said, "This voice was for your benefit, not mine. 31 Now is the time for judgment on this world; now the prince of this world will be driven out. 32 But I, when I am lifted up from the earth, will draw all men to myself." 33 He said this to show the kind of death he was going to die.
You can tell people who actually read the Bible from people who just speak out against Christianity. People who read it are able to see the very clear message presented in passages such as this.
Jesus loved to speak in parables. Mostly to confound the unbelievers, but also so that his points had all the more kick when you realized what He was actually saying. Many things pointed towards His atoning death, and they all made sense only after people realized He was crucified.
34 The crowd spoke up, "We have heard from the Law that the Christ will remain forever, so how can you say, 'The Son of Man must be lifted up'? Who is this 'Son of Man'?"
35 Then Jesus told them, "You are going to have the light just a little while longer. Walk while you have the light, before darkness overtakes you. The man who walks in the dark does not know where he is going. 36 Put your trust in the light while you have it, so that you may become sons of light." When he had finished speaking, Jesus left and hid himself from them.