The Lord continued: My dear Dakṣa Dvija, I am the original Personality of Godhead, but in order to create, maintain and annihilate this cosmic manifestation, I act through My material energy, and according to the different grades of activity, My representations are differently named.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
आत्ममायां समाविश्य सोऽहं गुणमयीं द्विज । सृजन् रक्षन् हरन् विश्वं दध्रे संज्ञां क्रियोचिताम्
ātmamāyāṃ samāviśya so'haṃ guṇamayīṃ dvija | sṛjan rakṣan haran viśvaṃ dadhre saṃjñāṃ kriyocitām
SB 4.7.51