414
Śrīmad-Bhāgavatam
[Canto 1, Ch. 8]
asya —of him;  kṣemāya —for the good;  vadhāya —for the purpose of killing;  ca —and;  sura-dviṣām —of those who are envious of the demigods.
TRANSLATION
Others say that since both Vasudeva and Devakī prayed for You, You have taken Your birth as their son. Undoubtedly You are unborn, yet You take Your birth for their welfare and to kill those who are envious of the demigods.
PURPORT
It is also said that Vasudeva and Devakī, in their previous birth as Sutapa and Pṛśni, underwent a severe type of penance to get the Lord as their son, and as a result of such austerities the Lord appeared as their son. It is already declared in the  Bhagavad-gītā  that the Lord appears for the welfare of all people of the world and to vanquish the  asuras  or the materialistic atheists.
TEXT 34
भारवतारणायान्ये भुवो नाव इवोदधौ । सीदन्त्या भूरिभारेण जातो ह्यात्मभुवार्थितः ॥३४॥
bhārāvatāraṇāyānye   bhuvo nāva ivodadhau   sīdantyā bhūri-bhāreṇa   jāto hy ātmabhuvārthitaḥ
bhāra-avatāraṇāya —just to reduce the burden to the world;  anye —others;  bhuvaḥ —of the world;  nāvaḥ —boat;  iva —like that;  udadhau —on the sea;  sīdantyāḥ —aggrieved;  bhūri —extremely;  bhāreṇa —by the burden;  jātaḥ —You are born;  hi —for;  ātmabhuvā —Brahmā;  arthitaḥ —being prayed for.
TRANSLATION
Others say that the world, being overburdened like a boat at sea, is much aggrieved, and that Brahmā, who is Your son, prayed for You, and so You have appeared to diminish the trouble.