Complex sentence: He was chosen by the Archbishop of Toulouse to observe Jeoffrey's gold processing technique, but instead of acknowledging such as a valid scientific technique, the bigot scholar was bent on condemning everything shown to him as heresy.
Split into simpler sentences: He was chosen by the Archbishop of Toulouse to observe Jeoffrey's gold processing technique. Instead of acknowledging it as a valid scientific technique, Bécher condemned everything shown to him as heresy.