Quick Answer
- stablish is not a word in modern English.
- establish is the word you want.
Examples:
✔ Apple Computers was stablished established by Steve Wozniak and Steve Jobs in 1976.
✔ They were able to stablish establish contact through social media.
Definitions of the Verb 'Establish' (not 'Stablish')
1. (primary meaning) to set up or found something, e.g. an organization, or a set of rules (synonyms: set up, start, organize). Common collocations: establish + themselves/relationships/standards/whether...
E.g. Most companies establish policies to promote workplace safety.
2. to show that something is true or certain (synonyms: prove, show, confirm)
E.g. He hoped to establish his innocence.
3. to 'establish contact with' someone means to start having contact with them.
E.g. They were able to establish contact through social media.
Note that the verb stablish used to be a word (it is an archaic word) but it is no longer used.

Countries are establishing targets for the reduction of greenhouse gases.
I hope this short lesson has been helpful. If you have a question, please leave a comment below.
-- Written by Matthew Barton / Creator of Englishcurrent.com

That’s great! Thanks for the info
According to l.Thess..3.13 why did they use the word stablish
I’m not sure who “I. Thess” is, but there is no word in English named ‘stablish’.
I Thessalonians 3:13 is what you meant, I believe. And the reason it was used in the KJV was because they didn’t use modern English, or at least a less modern form of it. “Establish” and “stablish” both appear in the KJV, alluding to the fact that there wasn’t a specific set of spellings for various words at the time of its translation.
“May he strengthen your hearts so that you will be blameless and holy in the presence of our God and Father when our Lord Jesus comes with all his holy ones.”
From https://www.purecambridgetext.com/post/2017/04/29/stablish-or-establish
Stablish may be considered archaic, but for the serious student it’s both practical and clear in communicating the ‘sense.’ In Paul’s epistle to the Colossians, he first thanks God for their faith in Christ Jesus—established (1:4). Next, he prays that they may be strengthened (stablished) upon the foundation of their faith (1:11). He repeats the theme in Chapter 2: “…the steadfastness of your faith in Christ. As ye have therefore received Christ Jesus the Lord (already established in Christ), so walk ye in him: Rooted and built up in him, and stablished…” (Col. 2:5-7). The foundation is in Christ (established) and the building up follows (stablished).