Sentence:  Instead, therefore, of addressing the legislature, or the magistrates, I shall endeavour to shew, that the evil does not rest with those who make, nor with those who are intrusted with the execution of, the laws; but that it has greatly increased in, consequence of the sinful <WSD>supineness</WSD> of individuals, and the relaxation of the moral system of parishes. (p. 28) 
Meaning of the word marked with <WSD> tags:  Total submissiveness; flat on one's back, lacking any backbone; with total abandon; prostrate; supine