A class on Sri Isopanisad Mantras 13-15 given by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada on May 18, 1970 in Los Angeles, CA.
Sri Isopanisad Mantra 13
anyad evāhuḥ sambhavād
anyad āhur asambhavāt
iti śuśruma dhīrāṇāṁ
ye nas tad vicacakṣire
It is said that one result is obtained by worshiping the supreme cause of all causes and that another result is obtained by worshiping what is not supreme. All this is heard from the undisturbed authorities, who clearly explained it.
Sri Isopanisad Mantra 14
sambhūtiṁ ca vināśaṁ ca
yas tad vedobhayaṁ saha
vināśena mṛtyuṁ tīrtvā
sambhūtyāmṛtam aśnute
One should know perfectly the Personality of Godhead Śrī Kṛṣṇa and His transcendental name, form, qualities and pastimes, as well as the temporary material creation with its temporary demigods, men and animals. When one knows these, he surpasses death and the ephemeral cosmic manifestation with it, and in the eternal kingdom of God he enjoys his eternal life of bliss and knowledge.
Sri Isopanisad Mantra 15
hiraṇmayena pātreṇa
satyasyāpihitaṁ mukham
tat tvaṁ pūṣann apāvṛṇu
satya-dharmāya dṛṣṭaye
O my Lord, sustainer of all that lives, Your real face is covered by Your dazzling effulgence. Kindly remove that covering and exhibit Yourself to Your pure devotee.