Albert Barnes Commentary John 17:8

"for the words which thou gavest me I have given unto them; and they received [them], and knew of a truth that I came forth from thee, and they believed that thou didst send me." — John 17:8 (ASV)

The words. The doctrines. Christ often represented himself as instructed and sent to teach certain great truths to people. Those he taught, and no others. See Barnes (John 5:30).