In Jain Dharma, a Tīrthaṅkara does not “discover” new things in the modern sense. After attaining Keval‑jñāna (omniscience), he directly knows all substances, in all times, in all modes. This knowledge is infinite and cannot be fully “listed”.

What a Tīrthaṅkara does is:

• Re‑reveal the eternal Jain Dharma (which always exists),
• Organize it clearly for that time‑cycle and for ordinary souls.

So instead of “every discovery”, we usually talk about what a Tīrthaṅkara establishes and clarifies after Keval‑jñāna. In simple points:

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1. Re‑establishing the Path to Liberation (Moksha‑mārga)

For this time‑cycle, Tīrthaṅkaras clearly re‑teach and organize:

1. Ratnatraya (Three Jewels)

- Samyak Darshan – Right Faith - Samyak Jñān – Right Knowledge - Samyak Chāritra – Right Conduct

1. Tattvas (Fundamental Truths)

Usually 7 or 9 tattvas are taught, e.g.: - Jīva (soul) - Ajīva (non‑soul) - Āsrava (inflow of karma) - Bandha (bondage of karma) - Saṃvara (stoppage) - Nirjarā (shedding) - Mokṣa (liberation) (Plus Puṇya and Pāpa in the 9‑tattva scheme.)

These truths are eternal; the Tīrthaṅkara makes them clear and living again for beings who have forgotten them.

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2. Establishing the Fourfold Saṅgha

Every Tīrthaṅkara, after omniscience, establishes the Tīrtha (ford) – the organized religious order:

1. Sādhus (monks)
2. Sādhvīs (nuns)
3. Śrāvakas (laymen)
4. Śrāvikās (laywomen)

With this, they:

• Give clear rules of conduct for monks and nuns.
• Give graded vows and practices for householders.
• Create a living system so that Dharma can continue even after the Tīrthaṅkara’s nirvāṇa.

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3. Clear Code of Conduct (Vows and Disciplines)

From omniscience, they perfectly know what helps or harms the soul. Using that, they prescribe:

1. Mahā‑vratas (Great Vows) for ascetics

- Ahimsa (non‑violence) - Satya (truth) - Achaurya / Asteya (non‑stealing) - Brahmacharya (celibacy) - Aparigraha (non‑possessiveness)

1. Aṇu‑vratas and supporting vows for householders, in milder forms.

Thus, the entire ladder of conduct from ordinary person up to Siddha is laid out based on their omniscient vision.

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4. Full Explanation of Karma and Spiritual Stages

From Keval‑jñāna they know, in detail:

• Types of karmas, their duration, intensity, place of bondage.
• How specific actions, thoughts, and passions bind which karmas.
• The 14 Guṇa‑sthānas (stages of spiritual development) – from complete delusion up to keval‑jñāna and then moksha.

They then teach and structure this knowledge so other souls can:

• Understand why they suffer.
• See how to purify passions and reduce bondage step by step.

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5. True Ahiṃsā and Ethics Toward All Life

Tīrthaṅkaras, through omniscience, know:

• All types of living beings (one‑sensed to five‑sensed).
• Subtle forms of himsā (violence) in thoughts, speech, and actions.

They therefore:

• Define real ahiṃsā, not just “not killing humans”.
• Explain care toward plants, water, fire, air, earth‑bodied beings, tiny organisms, etc.
• Show how to live, eat, earn, and speak with minimum violence in that era.

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6. Cosmic Vision: Loka, Time‑Cycle, Heavens & Hells

With omniscience they have complete direct knowledge of:

• Structure of the universe (Loka) – upper, middle, lower worlds.
• Heavenly regions and hells and who goes where due to which karma.
• Endless beginning‑less time cycles – Utsarpinī and Avasarpinī, and when Tīrthaṅkaras appear.

They then describe this in language suitable for the beings of their time, to create:

• Vairāgya (detachment)
• Understanding that worldly happiness is temporary and mixed with suffering.

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7. Practical Path for That Era

The principles of Dharma never change, but external forms (e.g., language, examples, some outer rules) are adjusted according to:

• The spiritual capacity of beings in that time.
• The physical environment and social conditions.

So a Tīrthaṅkara:

• Uses the most suitable language (e.g., Ardha‑Māgadhī in Mahāvīr’s time).
• Gives appropriate disciplines (for food, travel, possessions, etc.).
• Establishes a practical way of living Dharma that people can actually follow in that era.

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8. Infinite Knowledge, Limited Expression

Important to remember:

• Keval‑jñāna is infinite – every past, present, and future event, every soul, every atom is known.
• But humans have limited capacity.
• So the Tīrthaṅkara expresses only that portion of knowledge which helps souls move toward liberation.

Therefore we cannot list “every discovery”; we can only name the main categories of what they organized and revealed:

• Eternal truths (tattvas)
• Path (Ratnatraya, guṇa‑sthānas)
• Dharma‑code (vows, rules, disciplines)
• Saṅgha (fourfold community)
• Cosmology and karma‑law
• Practical guidance for daily life with minimal himsā

All Tīrthaṅkaras of a time‑cycle teach the same Dharma in essence. There is no disagreement in principles among them; only differences of time, place, and audience.

You can read more general explanations about the life and work of the Tīrthaṅkaras here: