ब्रह्मणो हि प्रतिष्ठाऽहममृतस्याव्ययस्य च। शाश्वतस्य च धर्मस्य सुखस्यैकान्तिकस्य च ॥

brahmaṇo hi pratiṣhṭhāham amṛitasyāvyayasya cha śhāśhvatasya cha dharmasya sukhasyaikāntikasya cha

For I am the abode of the Eternal, and of the indestructible nectar of immortality, of immemorial righteousness, and of unending bliss.

In plain words: Krishna says he is the home and foundation of the Eternal. He is also the source of everlasting life, of timeless goodness, and of happiness that never ends.