Visvedevas
The visvedevas refers to the designation used to address the entirety of the various deities featured in the Vedas. It also refers to a specific classification of deities in the Puranas. The visvedevas are sometimes regarded as the most comprehensive gathering of the gods, a classification in which no deity is stated to be omitted.
Literature
Rigveda
In the Rigveda a number of hymns are addressed to these deities, including : 1.3, 1.89, 3.54-56, 4.55, 5.41-51, 6.49-52, 7.34-37, 39, 40, 42, 43, 8.27-30, 58, 83 10.31, 35, 36, 56, 57, 61-66, 92, 93, 100, 101, 109, 114, 126, 128, 137, 141, 157, 165, 181.RV 3.54.17 addresses them as headed by Indra:
The dichotomy between devas is not evident in these hymns, and the devas are invoked together such as Mitra and Varuna. Though many devas are named in the Rigveda, only 33 devas are counted, eleven of them present each in earth, space, and heaven.