The god whose worship had not gained ground in the Rigvedic period was

The god whose worship had not gained ground in the Rlgvedic period was lord shiva. Indra, a heroic god, slayer of Vritra and destroyer of the Vala, liberator of the cows and the rivers; Agni the sacrificial fire and messenger of the gods; and Soma, the ritual drink dedicated to Indra, are the most prominent deities.