The Yadu–Vṛṣṇi–Andhaka Genealogies and the Purpose of Kṛṣṇa’s Advent
राजन्यकल्पवर्षाद्या उपदेवासुता दश । वसुहंससुवंशाद्या: श्रीदेवायास्तु षट् सुता: ॥ ५१ ॥
rājanya-kalpa-varṣādyā upadevā-sutā daśa vasu-haṁsa-suvaṁśādyāḥ śrīdevāyās tu ṣaṭ sutāḥ
De Upadevā nacieron diez hijos de Vasudeva, encabezados por Rājanya, Kalpa y Varṣa. De Śrīdevā, otra esposa, nacieron seis hijos, como Vasu, Haṁsa y Suvaṁśa.
It states that Upadevā had ten sons (beginning with Rājanya, Kalpa, and Varṣa) and Śrīdevā had six sons (beginning with Vasu, Haṁsa, and Suvaṁśa).
He is narrating the dynastic lineages (vaṁśa) that form the historical and devotional backdrop for the Lord’s appearances and the devotees’ stories in the Bhagavatam.
By seeing the Bhagavatam as a continuous sacred tradition—remembering that bhakti is carried through generations—and by cultivating gratitude and faith in the paramparā that preserves devotion.