Jennifer N. Wunder has written:

'Keats, hermeticism, and the secret societies' -- subject(s): Secret societies in literature, Philosophy, English poetry, Hermetism in literature, History and criticism, Criticism and interpretation, Romanticism

The decline of alchemy began during the 18th century with the birth of modern chemistry, which provided a more precise and reliable framework for the making of medicine and the transmutation of matter, within a new grand design of the universe based on rational materialism. Alchemy is still practiced by many today mostly in the form of philosophy, spiritualism, or mysticism under the category of hermeticism.

I suppose you are asking what such a belief is called.

It is referred to, on some occasions, as "monotheism". That is, the belief in one omnipotent God. The belief in several is called "polytheism".

Non-Abrahamic religions, such as Buddhism, Tengrism, or Hermeticism, are generally (and blasphemously) called "paganism" by some Christians.

Religion in general is called "theism". That is why non-believers are called "atheists", as they place their association with "atheism".

There is only one heaven, and it is for everyone who conforms themselves to God's Will while on earth. Anyone who does His Will to the extent that they understand it, and avoid sin, will enter heaven. Anyone who follows his own will and ignores the promptings of God will not enter heaven. It is more difficult for non-Christians, but it is still attainable, God does not leave anyone out but gives all the opportunity to love Him.

Short answer: yes. There is a seven heaven or seven plane paradigm that is found in the religions of Judaism, Islam, Catholicism, and Hinduism. It is also found in a number of minor religions like Gnosticism and Hermeticism. The basic idea is that those who are on an evil path cannot ascend very far into The Light and must reside on one of the first three planes, with the first one being the most hellish of places emotionally. Most souls gravitate to the third plane after death, a point just below basic spirituality. Basically spiritual people ascend to the fourth or fifth planes. The fourth plane is where the vast majority of discarnate communities/yellow-energy Group Entities or religious heavens reside. The sixth and seventh planes are where individualistic discarnate saints ascend to after death. ~ Paul Richard of HigherLightChurch

There is only one heaven, and it is for everyone who conforms themselves to God's Will while on earth. Anyone who does His Will to the extent that they understand it, and avoid sin, will enter heaven. Anyone who follows his own will and ignores the promptings of God will not enter heaven. It is more difficult for non-Christians, but it is still attainable, God does not leave anyone out but gives all the opportunity to love Him.

Short answer: yes. There is a seven heaven or seven plane paradigm that is found in the religions of Judaism, Islam, Catholicism, and Hinduism. It is also found in a number of minor religions like Gnosticism and Hermeticism. The basic idea is that those who are on an evil path cannot ascend very far into The Light and must reside on one of the first three planes, with the first one being the most hellish of places emotionally. Most souls gravitate to the third plane after death, a point just below basic spirituality. Basically spiritual people ascend to the fourth or fifth planes. The fourth plane is where the vast majority of discarnate communities/yellow-energy Group Entities or religious heavens reside. The sixth and seventh planes are where individualistic discarnate saints ascend to after death. ~ Paul Richard of HigherLightChurch