John 7:29
“I know Him, for I am from Him, and He has sent Me.”
Do you see how He continually seeks to prove the, “I am not come of Myself,” and, “He that sent Me is true,” striving not to be thought an enemy of God? And observe how great is the profit of the humility of His words; for, it says, after this many said,
Source: Homilies on the Gospel of John (New Advent)