Mahabharata 12.339.1

ब्रह्मोवाचशृणु पुत्र यथा ह्येष पुरुषः शाश्वतोऽव्ययःअक्षयश्चाप्रमेयश्च सर्वगश्च निरुच्यते

brahmovācaśṛṇu putra yathā hyeṣa puruṣaḥ śāśvato'vyayaḥakṣayaścāprameyaśca sarvagaśca nirucyate

Our plain-language meaning of this verse is waiting for scholar review.