Lord Brahma became struck with wonder by this extraordinary feat of Krsna's, and in a prayer he stated that although anyone and everyone could say they knew all about Krsna, as far as he was concerned, he did not know anything about Him

Expressions researched:
"in a prayer he stated that although anyone and everyone could say they knew all about Krsna, as far as he was concerned, he did not know anything about Him"

Teachings of Lord Caitanya

Lord Brahmā became struck with wonder by this extraordinary feat of Kṛṣṇa's, and in a prayer he stated that although anyone and everyone could say they knew all about Kṛṣṇa, as far as he was concerned, he did not know anything about Him. "My dear Lord," he said, "the potencies and opulences You have exhibited just now are beyond the ability of my mind to understand."

Teachings of Lord Caitanya, Chapter 9:

Again, Śrīmad-Bhāgavatam 10.14.21, one of the prayers of Brahmā, is very convincing in this connection: "O my dear Lord, O Supreme Personality of Godhead, O Supersoul, O master of all mystic powers, no one can know or explain the extent of Your Vaikuṇṭha planets or how You expand Your yogamāyā energy throughout the three worlds." And a few verses earlier (Śrīmad-Bhāgavatam 10.14.7) Brahmā prays:

guṇātmanas te ’pi guṇān vimātuṁ

hitāvatīrṇasya ka īśire ’sya

kālena yair vā vimitāḥsu-kalpair

bhū-pāṁśavaḥkhe mihikā dyu-bhāsaḥ

"Scientists and learned men cannot even measure the atomic constitution of a single planet. Even if they could count the molecules of snow in the sky or the number of stars in space, they could not understand how You descend to this earth or in this universe with Your innumerable transcendental potencies and qualities." In Śrīmad-Bhāgavatam (2.7.41) Lord Brahmāinforms Nārada that none of the great sages born before Nārada, including Brahmā himself, can measure the extent of the Supreme Lord's potencies. Indeed, Brahma declared that even Ananta, with His thousands of tongues, fails when He tries to fully describethe Lord's energies. Similarly, in Śrīmad-Bhāgavatam (10.87.41) the personified Vedas pray:

dyu-pataya eva te na yayur antam anantatayā

tvam api yad-antarāṇḍa-nicayā nanu sāvaraṇāḥ

kha iva rajāṁsi vānti vayasā saha yac chrutayas

tvayi hi phalanty atan-nirasanena bhavan-nidhanāḥ

"My Lord, You are unlimited, and therefore no one can measure the extent of Your potencies. I think that even You do not know the range of Your energies. An unlimited number of planets float in the sky just like atoms, and great Vedāntists, who are engaged in research to find You, discover that everything is different from You. At last they conclude that You are everything."

When Lord Kṛṣṇa was within this universe, Brahmā played a trick on Him in order to confirm that the special cowherd boy in Vṛndāvana was actually Kṛṣṇa Himself. By his mystic power Brahmā stole all the cows, calves and cowherd friends of Kṛṣṇa and hid them. But when Brahmāreturned to see what Kṛṣṇa was doing alone, he saw that Kṛṣṇa was still playing with the same cows, calves and cowherd boys. By His Vaikuṇṭha potency Lord Kṛṣṇa had expanded all the stolen cows, calves and friends. Indeed, Brahmā saw millions and billions of them, and he also saw millions and billions of herding sticks and fruits, lotus flowers and horns. All the cowherd boys were wearing different clothes and ornaments, and no one could count their vast numbers. Then Brahmā saw each of the cowherd boys become a four-handed Nārāyaṇa, and he also saw innumerable Brahmās from different universes offering obeisances to the Lord. He saw that all these personalities were emanating from the body of Kṛṣṇa and, after a second, entering into His body. Lord Brahmā became struck with wonder by this extraordinary feat of Kṛṣṇa's, and in a prayer he stated that although anyone and everyone could say they knew all about Kṛṣṇa, as far as he was concerned, he did not know anything about Him. "My dear Lord," he said, "the potencies and opulences You have exhibited just now are beyond the ability of my mind to understand."