Surah 2. Al-Baqara, Ayah 81

This is many degrees worse than merely falling into evil: it is going out to "earn evil" as the Arabic text has it, i.e., to seek gain in evil. Such a perverse attitude means that the moral and spiritual fortress erected around us by the Grace of God is voluntarily surrendered by us and demolished by Evil, which erects its own fortress, so that access to Good may be more and more difficult.