To understand meaning of moksha in depth we shall elaborate on connected spiritual doctrines:
Understanding life cycle of soul atman
All souls’ atmans in cosmos start their cosmic journey when Brahman, God Almighty explodes self with a big bang. This results in all souls atmans scattering all over cosmos at unimaginable speeds. In the melee hurtling souls atmans gathered impurities and to cleanse themselves of dross impurities within starts cosmic life cycle of every soul atman.
Spiritually Brahman God Almighty is the collective power of all souls’ atmans in their pure form.
No sooner life supporting planets like mother earth evolved, hurtling souls’ atmans immediately start manifesting life. The first manifestation by soul atman on mother earth is form of amoeba (single cell formation). It further evolves into multi-cell formation, insect life, plant life and animal life. Thereafter the animal form evolves into human form.
We as human beings were only a pawn, a medium in the life cycle of soul atman to cleanse self of dross impurities within. Surprising but an absolute fact of life!
Human beings gaining enlightenment
After manifesting human form the soul atman within prompts mankind to indulge in spirituality so that it could liberate self from cycle of birth and death forever. Normal human beings run their life prompted by ego from within. On path of pure spirituality we have to demolish this ego forever and handover reigns of life to soul atman itself.
Indulging in Indian spirituality, demolishing ego and finally establishing control over five senses and mind when human beings finally reached state of self realization, the cosmic journey of life for a soul atman comes to an end. One finally reaches 8.4 millionth manifestation. Apart from establishing control over five senses and mind practicing absolute celibacy for a minimum period of 12 years in continuation we have to awaken our kundalini shakti fully.
Reaching state of self realization, enlightenment announces a soul atman gaining absolute purity forever. In absence of dross impurities within the pure soul atman need not manifest a body again. The circle of life for a soul atman finally ends.
When this enlightened one, the self realized soul leaves mortal frame forever, the liberated soul atman finally reaches state of moksha salvation, liberation from cycle of birth and death forever. The liberated soul atman finally enters Vaikuntha (abode of God).
Moksha salvation is a state in the life cycle of a soul atman when after regaining its lost pure prime pristine primordial form the liberated soul atman finally becomes free from bonding of solar system and could venture into any part of cosmos at will. Until a soul atman gains absolute purity, it keeps rotating in the cycle of birth and death and remains attached to solar system.
It becomes free of solar system only after reaching state of moksha salvation, never before.
In present times enlightened souls like Mahavira, Gautama Buddha, Jesus Christ and Prophet Mohammed do not exist but their freed liberated souls can be invoked by anybody on mother earth to seek their blessings. This can be done only by highly evolved spiritual people.
I have done it many times. Once in our family there was a big discussion regarding height of people during times of 23rd Tirthankara of Jainism Parshvanatha. Some said the height of human beings during those times was 9 feet, other 11. I did not believe in them but kept concentrating on the matter profusely so much so that when I was taking my bath, a figure energized before me for few seconds and went away. At that time I did not understand what it was all about.
After contemplating on the same for above 15~16 hours I realized it could only have been Lord Parshvanatha who energized himself. The head of the energized form touched the bathroom ceiling which was 7 feet in height. I got my answer. People in times of Lord Parshvanatha were 7 feet in height.
Going to mental wavelength of Lord Krishna, I could invoke everything stated by Lord Krishna. Same was the case with other enlightened souls.
Understanding concept of spirituality and finally moksha salvation per se Hinduism scriptures is not difficult provided we developed willpower exhibited by Swami Vivekananda.