What does Luke 18:32 mean?

Jesus has warned the disciples that He will be killed. He has explained that the Jewish elders, chief priests, and scribes will reject Him (Luke 9:22), that he will "be delivered into the hands of men" (Luke 9:44), and that this will happen in Jerusalem (Luke 13:33). This is the most graphic warning recorded by Luke.

"Delivered to the Gentiles" refers to when the Sanhedrin will take Jesus to the Roman governor Pilate, falsely accuse Him of sedition, and demand the Romans crucify Him (Luke 23:1–5, 20–21). Both the Jews and the Romans will attempt to humiliate Jesus. The Jews will begin by spitting on Him, hitting Him, blind-folding Him and demanding He prophesy who hit Him (Matthew 26:67–68; Luke 22:63–65). After the Jews convince Pilate to have Jesus crucified, an entire battalion of Roman soldiers will do even worse. They will take His clothes and give him a scarlet robe and a crown of thorns, mocking Him as King of the Jews. They will spit on Him and hit Him over the head with a pole (Mark 15:16–19).

Jesus goes on. They will then flog Him and kill Him. But even this isn't the end: He will rise again on the third day! (Luke 18:33).