tvam nah paramakam daivam
tvam na indro jagat-pate
bhavaya bhava go-vipra
devanam ye ca sadhavah
You are our worshipable Deity. Therefore, O Lord of the universe, for the benefit of the cows, the brahmanas, the demigods and all other saintly persons, please become our Indra.
The Supreme Lord is self-sufficient: He can do everything Himself. The Lord appointed one of His innumerable children to the position of Indra, the lord of the cosmic heaven. But Indra abused his authority, and now Surabhi requests Lord Krsna, the Absolute Truth, to directly become her Lord, her Indra. We should carefully perform our duties without false pride; thus we will not become obsolete and embarrassed, as in the present case of King Indra, who actually attacked Lord Krsna and His Vrndavana devotees.