Śrīmad-Bhāgavatam · Text 8.24.5
Who is speaking and story frame
श्रीशुक उवाच
गोविप्रसुरसाधूनां छन्दसामपि चेश्वर: ।
रक्षामिच्छंस्तनूर्धत्ते धर्मस्यार्थस्य चैव हि ॥ ५ ॥
śrī-śuka uvāca
go-vipra-sura-sādhūnāṁ
chandasām api ceśvaraḥ
rakṣām icchaṁs tanūr dhatte
dharmasyārthasya caiva hi
Śrī Śukadeva Gosvāmī said: O King, for the sake of protecting the cows, brāhmaṇas, demigods, devotees, the Vedic literature, religious principles, and principles to fulfill the purpose of life, the Supreme Personality of Godhead accepts the forms of incarnations.
Read Śrīla Prabhupāda's purport on Vedabase.io