CHRISTOPHER: Okay, why is that man staring at me?
RORY: That’s Taylor Doose. He owns the market. He knows all and sees all.
A reference to God, who the Bible says is omniscient many times over. For example, “The eyes of the Lord are in every place” (Proverbs 15:3); “God looks to the ends of the earth and sees everything under the heavens” (Job 28:24); and “We know that God is greater than our hearts, and he knows everything” (1 John 3:20) are just a few examples. They are often summed up as, “He knows all and sees all”, and can be jokingly applied to anyone who seems to know everything.
The Annotated Gilmore Girls 