3715. Neither can the sirens be instructed in the other life, for whatever of true and whatever of good they see they do not lay hold of [and appropriate], because they are only in externals, but they immediately seize whatever [of this nature] they can, and regard it as a means of deceiving, of perverting, of insinuating themselves, of ensnaring, and of turning it into something magical; for whatever is pious or holy with others, becomes with them an external means, and so on; because there is nothing interior [with them] which constrains and obliges; of this they are, as it were, ignorant.