The three paths of yoga.
Krishna, God, the Supreme Person teaches us:
"The three paths of yoga (of union with the absolute, God) that I described in My desire to grant perfection to human beings are: the path of philosophy, the way of work and the path of devotion; there is no other means of elevation.
Why did the Supreme Lord plunge the spiritual soul into the material universe?
The Lord says: "When an individual being, believing himself to be different from Me, forgets his spiritual identity, according to which he is only one with Me on the qualitative plane, both in eternity and in knowledge. and in felicity, its conditioned material existence begins then. In other words, instead of identifying his interests with Mine, he begins to take an interest in the extensions of his body, such as his wife, his children, and his material possessions. Thus, by the effect of his acts, one birth is followed by another, and a death from another death.
All those who are in this universe (our galaxy) material came there for one and the same reason: they wanted to know the same pleasure as God. Thus they were sent into this world to be conditioned to varying degrees by material nature. Do not listen to the demonic miscreants who claim that the spiritual being is the equal of God, the Supreme Person, because there lies the cause of existence conditioned by matter. As soon as a being distinct from God forgets his own position and seeks to do no more than one with the Absolute, his conditioned existence begins. It is in fact the conception that the Supreme Lord and the spiritual being distinct from God are equal not only in quality, but also in quantity, which is at the origin of conditioned existence. Anyone who forgets the difference between the Supreme Lord and the individual being is subject to the conditions of the material world, which implies that he will have to give up one body to accept another, and die to die again.
He who refuses to obey the orders of the Supreme Lord is granted the power to enjoy existence in the material universe. Rather than restrain the conditioned being, the Lord provides him with the opportunity to enjoy life in this world, so that, through a proven experience, he comes to understand after many rebirths, that abandonment to God is the sole duty of all beings. Since everything depends on the will of God, the Supreme Person, our only duty is to surrender ourselves to Him and seek His protection.