Chapter 15 · The Supreme Person · Krishna said
Bhagavad Gita 15.17 — The Supreme Self
उत्तमः पुरुषस्त्वन्यः परमात्मेत्युधाहृतः। यो लोकत्रयमाविश्य बिभर्त्यव्यय ईश्वरः ॥
uttamaḥ puruṣastvanyaḥ paramātmetyudhāhṛtaḥ | yo lokatrayamāviśya bibhartyavyaya īśvaraḥ ||
Meaning
But the highest Person is different from both; He is called the Supreme Self. That imperishable Lord enters the three worlds and sustains them.