Krishna Is the Source of All Incarnations!

Verse 1.3.1: Starting Chapter 3 of Canto 1, explaining Lord Krishna as the source of all incarnations.

Srila Süta Goswami is saying: In the beginning of the creation, the Lord first expanded Himself in the universal form of the purusa incarnation and manifested all the ingredients for the material creation. And thus at first there was the creation of the sixteen principles of material action (5 gross material elements and 11 working senses). This was for the purpose of creating the material universe.

It is also explained as to how the eternally conditioned beings are given a chance through this creation to come out of the cycle of birth and death and go back home back to Godhead.

In the Bhagavad-gita it is also mentioned that the material world is created at certain intervals and then again destroyed. This creation and destruction is done by the supreme will because of the conditioned souls, or the nitya-baddha living beings. The nitya-baddha, or the eternally conditioned souls, have the sense of individuality or ahankara, which dictates them sense enjoyment, which they are unable to have constitutionally. The Lord is the only enjoyer, and all others are enjoyed. The living beings are predominated enjoyers. But the eternally conditioned souls, forgetful of this constitutional position, have strong aspirations to enjoy. The chance to enjoy matter is given to the conditioned souls in the material world, and side by side they are given the chance to understand their real constitutional position. Those fortunate living entities who catch the truth and surrender unto the lotus feet of Väsudeva after many, many births in the material world join the eternally liberated souls and thus are allowed to enter into the kingdom of Godhead. After this, such fortunate living entities need not come again within the occasional material creation. But those who cannot catch the constitutional truth are again merged into the mahat-tattva at the time of the annihilation of the material creation.