Where is that sentiment contained in SCRIPTURE? And I don't mean a quote that can by tortured into that interpretation, but the exact quote. Doesn't SCRIPTURE declare that it does not and could not contain all that Jesus said or did?
Through thy precepts I get understanding: therefore I hate every false way." Psalm 119:100,104
"Every word of God is pure: he is a shield unto them that put their trust in him." -- Proverbs 30:5
"All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: That the man of God may be perfect, throughly furnished unto all good works." -- 2 Timothy 3:16-17
"And Jesus answered him, saying, It is written, That man shall not live by bread alone, but by every word of God." -- Luke 4:4
"I understand more than the ancients, because I keep thy precepts...