Albert Barnes Commentary John 7:20

"The multitude answered, Thou hast a demon: who seeketh to kill thee?" — John 7:20 (ASV)

The people. Perhaps some of the people who were not aware of the designs of the rulers.

You have a devil. You are deranged or mad. See John 10:20. As they saw no effort to kill him, and as they were ignorant of the designs of the rulers, they supposed that this was the effect of derangement.