Truth

When we receive truth we are expected to live our lives in conformity with the truth we've received.  We shouldn't expect to receive more if we do not live what we've already been given.  Living in conformity with such truth as you already have is also always required to avoid deception.  It is simply not possible to harvest additional light while refusing to live the light already given.  False spirits visit with those who invite them by their misconduct, rebellion or wickedness.  Hence the need to constantly re-evaluate how you live and the choices you make.