Bhagavatapurana 4.29.44

4.29.44

adyāpi vācas-patayas tapo-vidyā-samādhibhiḥ /
paśyanto 'pi na paśyanti paśyantaṃ parameśvaram //

42—43&44. Brahma, First among the Progenitors, the worshipful Siva, Manu, Daksha and other progenitors, Sanaka and other Sages solely devoted to the Lord; Marīchi, Atri, Angiras, Pulastya, Pulaha, Kratu, Bhrigu, Vasishta,—these and others and I the last—all given to the study of Vedas and devotion to Brahman and masters of speech also, are to this moment trying by means of Tapas, Upasana, and contemplation to see Him, but do not see the Supreme Ruler, Who sees (all)?