The word cult comes from Latin cultus, worship, from past participle of colere, to cultivate. This lecture explains what a cult is, and discusses many types of cults: Christian, Muslim, Buddhist, Gnostic, etc., and how we worship according to our inner psychological and spiritual state. Discusses the pineal gland, kabbalah, the hebrew letters, and more. Lecture reference:

When the influences of our Innermost reach our mind from the pineal gland, its flowing spiritual concentration calms the mind for meditation. Regrettably, the mental body is influenced by the exterior senses, whose impressions are usually transformed into desires, then the mind quickly withdraws from the innermost, falling into the world of Maya (Illusions). This is why it is difficult for the innermost to manifest his Self through the Mind. The Innermost needs the atom of the Holy Spirit in the Pineal Gland in order to dominate the mind, this atom can dominate the central nervous system and others nervous systems, if we fortify it with the solar and lunar atoms from our sexual fluids from Yesod. Unfortunately, our sexual fluids are controlled by our own particular individual Satan: He is the root of our Ego, the secret enemy that we created by the transgression of the law (Thou shalt not fornicate). Thus, Satan dominates our sexual System. Satan defends our animality and makes it his weapon against our Innermost. Therefore, our mind and sex are under the dominion of Satan, the Ego, which governs our instincts and senses. This is why the Innermost has to penetrate into initiation through the Nous Atom, that is the Atom of the Son who governs the heart; Christ – through the heart – can control our mind, our instincts and senses. The heart is the only organ in the body through which the innermost can control the mind and sex. The will of our Innermost flows through our blood. Through it our innermost feeds our organism and the three nervous systems which can give life to our inner psychological world. Thus, in our physical body the blood is the vehicle of our innermost, through which he can mobilize our entire humanity. The Nous atom cyclically communicates the will of God through the heart; this is why meditation is the way through which the heart influences the mind, becoming the center of compassion and at the same time the organ of the intuitive thinker. For that reason Jesus stated:Lay not up for yourselves treasures upon earth, where moth and rust doth corrupt, and where thieves break through and steal: But lay up for yourselves treasures in heaven, where neither moth nor rust doth corrupt, and where thieves do not break through nor steal: For where your treasure is, there will your heart be also.