KeU 4.2
तस्माद्वा एते देवा अतितरामिवान्यान्देवान्यदग्निर्वायुरिन्द्रस्ते ह्येनन्नेदिष्ठं पस्पर्शुस्ते ह्येनत्प्रथमो विदाञ्चकार ब्रह्मेति
Therefore these Devas,--Agni, Vayu and Indra--excel other Devas, because they came nearer to Brahman. It was they who first knew this spirit as Brahman.
Translated by Swami Paramananda
Therefore these Devas, viz. Agni, Vâyu, and Indra, are, as it were, above the other gods, for they touched it (the Brahman) nearest.
Translated by F. Max Müller