Bhagavatapurana 4.16.10

4.16.10

avyakta-vartmaiṣa nigūḍha-kāryo gambhīra-vedhā upagupta-vittaḥ /
ananta-māhātmya-guṇaika-dhāmā pṛthuḥ pracetā iva saṃvṛtātmā //

10. His ways are not perceptible; the object aimed at by him is a mystery; he does everything with a deep intent; his wealth is strictly guarded; he is one abode of innumerable and glorious attributes; (and in short) Pṛthu like Varuṇa is one whose true nature is hidden (from the view of the world).