PURPORT

The administrative posts occupied by the demigods for maintaining the regulations of the material world are offered to the highly elevated pious living beings. When there is a scarcity of such highly elevated pious living beings, the Lord incarnates Himself as Brahma, Prajapati, Indra etc. and takes up the charge. During the period of Swayambhuva Manu (the present period is of Vaivaswata Manu) there was no suitable living being who could occupy the post of Indra the king

in the Indraloka (heaven) planet. The Lord Himself at that time became Indra and assisted by His own sons like Yama and other demigods the Lord Yanjna ruled over the administration of the universal affairs.