Here’s a simple, authentic fact about Bhagwan Rishabh Dev (Adinath):

• He is revered as the first Tirthankar in Jainism. According to Jain scriptures, he established the Jain dharma and taught for a very long period to help beings progress on the path of right conduct, right knowledge, and right faith. His life sets the pattern of renunciation, universal compassion, and the gradual spread of spiritual knowledge that later Tirthankaras follow.

If you’d like, I can share more about his major events (like his renunciation, teachings, and the symbols used to represent him) in a straightforward way.

You can read more on this topic here