What’s the biggest risk you’d like to take — but haven’t been able to? Oldest religion texts. There are four Vedas and 108 Upanishads in Sanatan Dharma. The Vedas are considered to be the oldest religious texts. The four Vedas are as follows: 1. Rigveda 2. Yajurveda 3. Samaveda 4. Atharvaveda These Vedas, as well…