Chapter 14 · The Three Qualities · Krishna said
Bhagavad Gita 14.27 — God, the basis of all
ब्रह्मणो हि प्रतिष्ठाहममृतस्याव्ययस्य च। शाश्वतस्य च धर्मस्य सुखस्यैकान्तिकस्य च ॥
brahmaṇo hi pratiṣṭhāhamamṛtasyāvyayasya ca | śāśvatasya ca dharmasya sukhasyaikāntikasya ca ||
Meaning
For I am the foundation of the immortal, imperishable Brahman, of eternal dharma, and of perfect bliss.