What does John 7:18 mean?
Rather than being educated in some rabbinic school, or generating knowledge on His own, Jesus credits His amazing wisdom to God (John 7:16). In context, this is what Jesus means by those speaking on "his own authority." While Jesus is fully man, and fully God (Colossians 1:19), His earthly mission is to follow the will of God the Father. Since the message Jesus brings is that of God, God is to be given credit for it. Even further, Jesus claims that a person's willingness to obey God is what determines his or her understanding—rather than the reverse, where understanding enables obedience.Even Jesus' critics were forced to take note of His honesty and moral perfection (John 8:46). This very fact made Jesus' claims difficult to dismiss out-of-hand. This is another common theme of Christianity. When we give critics of the faith no cause to criticize us (Titus 2:7–8; 1 Peter 3:15–16), or to seek revenge (Romans 12:17–19), we make the gospel all but inarguable.
John 7:14–24 is a strong spiritual challenge issued by Jesus against the religious leaders of Jerusalem. Jesus makes the point that obedience is a necessary aspect of learning. The resistance of the scribes and Pharisees is ultimately a matter of rebellion, not knowledge. In the same way, Jesus criticizes their hypocritical attitude towards His miracles. This concludes with a powerful statement about the need to use ''right judgment,'' rather than shallow appearances.
Six months after the feeding of thousands, and the public debate which followed, Jesus plans to attend the Feast of Booths, also called the Festival of Tabernacles. Rather than going publicly, He chooses to arrive privately, and after His family. While teaching and preaching there, Jesus once again comes into conflict with local religious leaders. The crowds take note of His profound words, history of miracles, and the inability of the religious leaders to silence Him. This causes the people to openly question their spiritual leaders. This embarrassment is a milestone in the effort to permanently silence Jesus.