{Which of you convicteth me of sin?} (Tis ex hum(936e) elegchei
me peri hamaritas;). See on  3:20  16:8  (the work of the Holy
Spirit) for elegch(935c) for charge and proof. The use of hamartia
as in  1:29  means sin in general, not particular sins. The
rhetorical question which receives no answer involves sinlessness
( Heb 4:15 ) without specifically saying so. Bernard suggests
that Jesus paused after this pungent question before going on.
{Why do ye not believe me?} (Dia ti humeis ou pisteuete moi;).
This question drives home the irrationality of their hostility to
Jesus. It was based on prejudice and predilection.