Śrīmad-Bhāgavatam · Text 12.7.14
Who is speaking and story frame
रक्षाच्युतावतारेहा विश्वस्यानु युगे युगे ।
तिर्यङ्मर्त्यर्षिदेवेषु हन्यन्ते यैस्त्रयीद्विष: ॥ १४ ॥
rakṣācyutāvatārehā
viśvasyānu yuge yuge
tiryaṅ-martyarṣi-deveṣu
hanyante yais trayī-dviṣaḥ
In each age, the infallible Lord appears in this world among the animals, human beings, sages and demigods. By His activities in these incarnations He protects the universe and kills the enemies of Vedic culture.
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.