Why is the K in KNIGHT silent? - A guide to words beginning KN & GN

Knife, know, knight, knot... Why is the K in KN words silent? Watch this video and I will explain all.While I'm at it, I'll also tell you why there's a silent G at the start of gnat, gnaw and gnome.This video is part of my series about silent letters in English. Subscribe to my channel for more interesting insight into the English language.