What does John 8:28 mean?
This one statement packs a number of crucial ideas into only a few words. Here, Jesus predicts His own death, lays claim to being the fulfillment of prophecy, equates Himself both with Messiah and God, and professes that His words and actions are those of God Himself.In Jesus' day, crucifixion was considered to be so vile, so brutal, and so shameful that people rarely spoke of it directly. Instead, they would use various metaphors, such as being "lifted up." This is a particularly common reference for Jesus, who often speaks of how the Messiah—Jesus Himself—must be "lifted up" in order to accomplish His mission (John 3:14; 12:32).
The term "Son of Man" was one Jewish listeners would have immediately recognized. In Daniel, the Messianic figure is described as "one like a son of man" (Daniel 7:13–14). When Jesus uses this phrase, His audience knows precisely what He is referring to. Many of them also know that Jesus often used this expression in reference to Himself (Matthew 8:20; Mark 2:10, 28; Luke 12:10; John 3:13–14).
In verse 24, Jesus had used the expression "I am he" in reference to His role as the One source of salvation (John 3:16–18). This echoes the famous words of God, who identified Himself to Moses by stating "I AM WHO I AM…Say this to the people of Israel: 'I AM has sent me to you'" (Exodus 3:14). Jesus echoes this same claim often. In the gospel of John, seven such statements are given special attention, including one earlier in this very conversation (John 8:12).
Jesus also makes another comment linking His words and His teachings to those of God the Father. In the next verse, Jesus will continue to explain how He is eternally, continually in communion and agreement with His heavenly Father.