Spiritual life leads us to our primordial state, free from all material identification. We reach the state which frees us from all anguish, pain and lust. Once this state has been reached, it is then possible to think in terms of universal brotherhood.
The next step is to engage fully in the consciousness of Krishna, God, the Supreme Person, and thus gradually come closer to the spiritual world where we find eternal life, all of knowledge and bliss. In other words, when the spiritual soul is freed from all contamination or material designation, it no longer knows what has to do with transmigration, reincarnation, in another material body after death. She then rejoins the spiritual world and remains eternally in one of the spiritual planets known as the Vaikuntha planets.
Lord Krishna dwells in the highest of these planets, Goloka Vrindavana.
We must all understand that we are constantly reincarnating, transmigrating from one body to another. The body is dying every moment, and the soul is passing from one body to another continuously. This is a medically established fact. Blood cells are constantly changing and are replaced by other cells that take their place. The old order is changing giving way to a new order. It is a perpetual movement.
This is how the soul passes from the body of the baby to the body of the child, and from the body of the child to that of the boy or the girl. Then it transmigrates from the boy's body to that of the adolescent then to that of the young man, or from that of the girl to that of the adolescent and then to that of the young girl.
In this way, when the end approaches and the body no longer performs its functions correctly, the soul must reincarnate in another material body after leaving the old one which has become unusable, or when the programmed end of life is reached.
The body changes, but the soul is still there. We all remember the body from our childhood, our old body. That body no longer exists today, but I still exist and have existed in the past. So, I must also exist in the future despite the change of body. All this is explained in detail by Lord Krishna in the Bhagavad-Gita (Words of Krishna, Christ, God, the Supreme Person) and it is our duty to make use of all this sublime knowledge.
Logos 382
Concerning the true qualities and defects, the Lord said: