Sentence:  And is it not then a horrid shame, to hear honest people so seduced into Love-killing factious sidings by their Teachers, as that Boys and Women speak of wiser and better persons with disaffection and reproach, saying, O he is a <WSD>"Free-willer</WSD>," or he "holdeth Free-will," when they know not what they talk of: but are made believe that it is some monstrous impious Opinion, making a man almost an Heretick? 
Meaning of the word marked with <WSD> tags:  A person belonging to a sect that rejected the doctrine of predestination.