Answer

If by “gating” you mean gati or the next birth state, then building a Jain temple with 3 shikhars and 24 Tirthankar idols can certainly be a punya-karma, but it does not automatically guarantee a better next life.

Explanation

In Jain Dharma, the result depends mainly on:

• Bhav — your inner intention
• Shraddha — devotion and right faith
• Ahimsa and purity — how the work is done
• Non-attachment — whether there is ego, pride, or show-off

A temple construction done with:

• sincere devotion,
• respect for the Tirthankars,
• pure conduct,
• and without violence or selfish motives

can create punya, which may support an auspicious birth in the future, such as a better human birth or sometimes a deva gati birth.

But in Jainism, external construction alone is not enough. If the heart has ego, greed, or pride, the spiritual benefit becomes much less.

Spiritual Understanding

A Jain temple is sacred because it supports:

• remembrance of the Tirthankars,
• inner purification,
• detachment,
• and devotion toward liberation.

The 24 idols remind us of the 24 Tirthankars and their path of victory over karma. The 3 shikhars may be architecturally auspicious, but spiritually the true value comes from bhakti with humility.

So, the real Jain teaching is:

• Temple construction = punya
• Pure intention = stronger punya
• Right conduct = deeper spiritual benefit
• Liberation = only through right faith, right knowledge, and right conduct

Takeaway

Yes, such temple construction can help create auspicious karma and a better next birth, but only when done with pure intention, humility, and Jain values. It is a means of punya, not a guarantee by itself.

If you want, I can also explain this in simple Jain karmic terms like punya, pap, gati, and moksha.