Jesus continued to enlighten them.
John 6:45 It is written in the Prophets: ‘They will all be taught by God.’ Everyone who listens to the Father and learns from him comes to me.
He was indirectly pointing the entire Old Testament to Himself, which is accurate. Had they read the Scriptures as they were intended, they would have been looking for a Lamb and not a Lion-this time!
V46 Jesus claimed to have seen the Father. In fact, He CAME from the Father. He says as much in verse 51. Then He lays it on the line:
 I am the living bread that came down from heaven. If anyone eats of this bread, he will live forever. This bread is my flesh, which I will give for the life of the world.”
Verses 53-58 will separate a group real fast. Jesus didn’t mince words; He was counting on the Holy Spirit to interpret His words in the hearts of those who were ready to accept them. THIS is how to present the Gospel!
Now, if we are working with children, our approach has to be on their level of understanding, but I have no qualms about calling them to follow Jesus closely.
May you call and encourage many children to come to Jesus in your ministry at LifeChurch.