Bhagavad Gita 15.17
But I am higher than all, the Supreme God, the Absolute Self, the Eternal Lord, who pervades and upholds all the worlds.
उत्तमः पुरुषस्त्वन्यः परमात्मेत्युदाहृतः।यो लोकत्रयमाविश्य बिभर्त्यव्यय ईश्वरः॥uttamaḥ puruṣastvanyaḥ paramātmetyudāhṛtaḥ|yo lokatrayamāviśya bibhartyavyaya īśvaraḥ||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).