Text 19]
Rṣabhadeva's Appearance
133
tataḥ —therefore;  āgnīdhrīye —in the wife of Nābhi, the son of Āgnīdhra;  aṁśa-kalayā —by an expansion of My personal form;  avatariṣyāmi —I shall advent Myself;  ātma-tulyam —My equal;  anupalabhamānaḥ —not finding.
TRANSLATION
Since I cannot find anyone equal to Me, I shall personally expand Myself into a plenary portion and thus advent Myself in the womb of Merudevi, the wife of Mahārāja Nābhi, the son of Āgnīdhra.
PURPORT
This is an example of the omnipotence of the Supreme Personality of Godhead. Although He is one without a second, He expands Himself by  svāṁśa , His personal expansion, and sometimes by  vibhinnāṁśa , or His separated expansion. Lord Viṣṇu herein agrees to send His personal expansion as the son of Merudevi, the wife of Mahārāja Nābhi, who is the son of Āgnīdhra. The  ṛtvijaḥ , the priests, knew that God is one, yet they prayed for the Supreme Lord to become the son of Mahārāja Nābhi to let the world know that the Absolute Truth, the Supreme Personality of Godhead, is one without a second. When He incarnates, He expands Himself in different potencies.
TEXT 19
श्रीशुक उवाच
इति निशामयन्त्या मेरुदेव्याः पतिमभिधायान्तर्दधे भगवान् ॥१९॥
śrī-śuka uvāca
iti niśāmayantyā merudevyāḥ patim abhidhāyāntardadhe bhagavān.
śrī-śukaḥ uvāca —Śrī Śukadeva Gosvāmī said:  iti —thus:  niśāmayantyāḥ —who was listening;  merudevyāḥ —in the presence of Merudevi;  patim —unto her husband;  abhidhāya —having spoken;  antardadhe —disappeared;  bhagavān —the Supreme Personality of Godhead.