Devarim 9:21

Verse 21. And the spiritual man searches out what is evil in the loves and worship of the external man which separates the soul from heaven, a resemblance of good in external form only, proceeding from man's own evil heart, and finds it to be defiled with self-love; and that its good and truths are profaned by being applied to evil loves till they are utterly destroyed; and that the falses which proceed from infernal delights are mixed with the truths which flow from heaven (Arcana Coelestia 9391).