'Lower' in the Bible

For I know that in me, that is, in my lower self, nothing good has its home; for while the will to do right is present with me, the power to carry it out is not.

Therefore, brethren, it is not to our lower natures that we are under obligation that we should live by their rule.

For I am convinced that neither death nor life, neither the lower ranks of evil angels nor the higher, neither things present nor things future, nor the forces of nature,