Śrīmad-Bhāgavatam · Text 10.84.41
Who is speaking and story frame
वसुदेव भवान् नूनं भक्त्या परमया हरिम् ।
जगतामीश्वरं प्रार्च: स यद् वां पुत्रतां गत: ॥ ४१ ॥
vasudeva bhavān nūnaṁ
bhaktyā paramayā harim
jagatām īśvaraṁ prārcaḥ
sa yad vāṁ putratāṁ gataḥ
O Vasudeva, without doubt you must have previously worshiped Lord Hari, the master of all worlds. Both you and your wife must have perfectly worshiped Him with supreme devotion, since He has accepted the role of your son.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.