John Trapp on John 8:9-10

Verſe 9. Convicted by their own conſcience] Which is Gods ſpie, and mans over-ſeer; index, judex, vindex: [non-Latin text not transcribed]. ſo that ſinners are ſelf-condemned, and oft betrayed by their own bluſhing, and heart-beating, when yet the offence is ſecret. Yea, a man feels an inward ſhame in his own heart, diſgracing, and abuſing him, though he make no outward ſhew of it. For albeit an innocent perſon, upon the fulneſſe of an aſperſion, may conceive ſhame, as did David, Pſal. 44.15. Yet it is uſually the effect of an ill conſcience.