Two things, that is explained. Aśraddadhānāḥ. What Kṛṣṇa is speaking, the instruction, if we have no faith to believe Him, and if we don't accept it, then the result is that he is losing the chance. He got this human form of life to understand God, but if he is missing this opportunity, then the result will be aprāpya māṁ nivartante. We have come from God. Either you go back to home, back to Godhead, or again we go back to the cycle of birth and death. Mṛtyu-saṁsāra-vartmani. The cycle of birth and death, it is called mṛtyu-saṁsāra. Saṁsāra means tribulation, tribulation, sufferings. Suffering... The ultimate suffering is mṛtyu, death. So death, again birth. That is also suffering. Although we forget, but to take birth is a great suffering. Great suffering means you have to enter the womb of the mother and you have to grow your body and there is risk of being killed also. Especially at the present moment they are killing the child in the womb. So just imagine how much suffering it is. And if he is killed, if the child is killed, then his term of imprisonment in that body is not finished. Therefore he has to enter again another body, again enter into the mother's womb. And, it may be, many hundreds of years may pass on before he can again see light. So it is great suffering.
Therefore Kṛṣṇa presents, janma-mṛtyu-jarā-vyādhi-duḥkha-doṣānudarśanam (BG 13.9). Intelligent person, they should always keep before, the sufferings. We are making solution of our suffering for ten years or fifty years or hundred years because we cannot live here more than hundred years. So that is temporary. I am eternal; you are eternal. Our real suffering is to take birth and remain in the womb of the mother. And even coming out of the womb of the mother, the small children, they feel always uncomfortable. Therefore they cry. The mother cannot understand what is the suffering of the... He is hungry but the mother is thinking that he wants to sleep or misunderstanding the child is uncomfortable. In this way childhood is past. Then again we become boy, again go to a school, again examination, again this. In this way the whole life is suffering. But under the spell of māyā, we are thinking we are happy. Therefore it is said mṛtyu-saṁsāra-vartmani. If we want to get relief from this business of birth, death, old age and disease, let us take to Kṛṣṇa consciousness, or God consciousness, and take His instruction directly and apply it in life. Your life will be successful. This is the subject matter of this chapter.