Here are several Jain-friendly welcome wordings you can use for a Jaap gathering. I’ve kept them simple and devotional, with translations.

Option 1 — Very short

• Jai Jinendra! Aap sabka Jaap mein hardik swagat।

Meaning: Victory to the Jina. A warm welcome to everyone for Jaap.

Option 2 — Warm and inclusive

• Jai Jinendra! Sabhi bhai-behenon ka is Jaap sabha mein hardik swagat hai. Aaiye milkar Shuddha Bhavnaon se Jaap karein।

Meaning: Greeting to all brothers and sisters. Welcome to this Jaap gathering. Let us chant with pure intentions.

Option 3 — Formal invitation

• Jai Jinendra. Aap sabka hamesha ki tarah is Jaap sabha mein swagat hai. Krupya man ki shanti aur ekagrata ke saath Jaap mein bhag lein।

Meaning: Greeting to you all. You are warmly welcome to this Jaap gathering. Please join with inner peace and concentration.

Option 4 — With Namokar Mantra reference

• Jai Jinendra! Namokar Manu Satyam ke saath is Jaap ki shuruaat karte hain. Aap sabka swagat hai, aur santosh se Jaap mein shamil hon।

Meaning: Greeting. We begin Jaap with the Namokar mantra. Welcome to all; join with joy.

Option 5 — Simple Hindi, friendly

• Jai Jinendra! Is Jaap sankirtan mein aap sabka dil se swagat hai. Aaiye milkar bhav se bhashan yaad rakhkar Jaap karein।

Note: Slight cultural nuance—“bhav se bhashan” is a gentle reminder to keep pure feelings during Jaap.

Option 6 — Short devotional tone

• Jai Jinendra! Aap sabka is Jaap mein hraday se swagat hai. Shuddha bhavnaon ke saath Jaap ki pavitrata banaye rakhein۔

Meaning: Greeting. Welcome from the heart to this Jaap. Maintain the purity of Jaap with sincere feelings.

Transliterations (optional quick read)

• Jai Jinendra! Aap sabka Jaap mein hardik swagat.
• Jai Jinendra! Sabhi bhai-behenon ka is Jaap sabha mein hardik swagat hai.
• Jai Jinendra. Aap sabka hamesha ki tarah is Jaap sabha mein swagat hai.
• Jai Jinendra! Namokar Manu Satyam ke saath is Jaap ki shuruaat karte hain. Aap sabka swagat hai.
• Jai Jinendra! Is Jaap sankirtan mein aap sabka dil se swagat hai.
• Jai Jinendra! Aap sabka is Jaap mein hraday se swagat hai.

If you want, tell me the setting (formal program, informal gathering, kids’ session, etc.) and I’ll tailor a single polished welcome line for you.