The three Gospels of Matthew, Mark, and Luke give very similar accounts of the things that transpired between Jesus entering Jerusalem to the praise of the crowds up to the Passover meal He had with His disciples. Matthew gives the most thorough account. Those Gospels give great insight into the teachings Jesus wanted to impart while He had time. He knew His time was at hand. These are the last things Jesus spoke before His crucifixion. I encourage you to read Matthew 21-26:16, Mark 10:32-14:11, and Luke 19:28-22:3.
John, however, shared with us something different. In John 12:20 there are some Greeks who had come to Jerusalem for the Passover celebration. They told Philip they were interested in meeting Jesus. Verse 22 says that Philip told Andrew and they went to ask Jesus together. It never says that Jesus met with them. It just tells us what He replied in verse 23,
“Now the time has come for the Son of Man to enter into his glory.”
What? Not a yes or a no. He goes on to say, “unless a kernel of wheat is planted in the soil and dies, it remains alone. But its death will produce many new kernels—a plentiful harvest of new lives.”
Then John 12:27, “Now my soul is deeply troubled. Should I pray, ‘Father, save me from this hour? But this is the very reason I came! Father, bring glory to your name.”
Bible commentary ties the visitation of the Greeks at the end of Jesus’ life with the visitation of the Magi at the beginning of Jesus’ life. He saw the seeking interest of these Gentiles as the signal that “the time had come for the Son of Man to enter into his glory.” Jesus was deeply troubled. He knew what awaited Him, but He also knew this was the reason He had come.
These verses, although spoken to a crowd, seem to be the internal thoughts of Jesus as He lays out the mission He came to earth to complete. The final sentence in verse 36 stood out to me, “After saying these things, Jesus went away and was hidden from them.” He was done.
The next verse starts with “But despite all the miraculous signs Jesus had done, most of the people still did not believe him.” (John 12:37 NLT) What? They’ve heard incredible wisdom from Him. He’s done amazing, miraculous miracles right in front of them, yet despite it all, they still didn’t believe him. Jesus implored them.
“Jesus shouted to the crowds, “If you trust me, you are trusting not only me, but also God who sent me. For when you see me, you are seeing the one who sent me. I have come as a light to shine in this dark world, so that all who put their trust in me will no longer remain in the dark.”
The same call from Jesus comes today to trust Him, trust the God who sent Him. But for those who don’t. . .
“But all who reject me and my message will be judged on the day of judgment by the truth I have spoken. I don’t speak on my own authority. The Father who sent me has commanded me what to say and how to say it. And I know his commands lead to eternal life; so I say whatever the Father tells me to say.”
Lord, in these last days, open blinded eyes and soften hardened hearts so that eyes can see, and hearts can understand, and they will turn to You and have You heal them. Bring the harvest.
Excerpts from John 12:20-50 NLT
Debbie's Perspective 
I’ve read that many times, but didn’t stop to realize that Jesus didn’t really respond to the request by the Greeks, but yet it was important enough for John to write about. I also view it as; you have to come to Jesus yourself. There is no longer a mediator between Him and us, we can come to him directly. Praise God! We can be the one to introduce Jesus to others, but they must turn to him fully with their own eyes, ears, and hearts. I add to Debbie’s prayer, that we be bold to be the witness for Jesus, to be willing to share so that others can see, hear, and know.