Currently Sublime Text 3 is not supporting bidirectional languages like Arabic, Hebrew etc.. Using this plugin you can view bidirectional texts.

Please note, I don't know Arabic or Hebrew. I have checked the results by pattern matching. Its a starting point.

Clone it into Sublime Package directory.

Set Font face to any Arabic supporting font (Arial) in user settings.

Open file. Enter text Tools > Bidirectional text (ctrl+b)

Tools > Bidirectional text Ctrl + B Right click > Bidirectional text

Post an issue here on Github. https://github.com/praveenvijayan/Sublime-Text-2-BIDI/issues

https://www.decodize.com/html/sublime-text-2-bidirectional-language-support-plugin/

Follow for updates : @praveen_vijaya

https://github.com/MeirKriheli/python-bidi
https://github.com/mpcabd/python-arabic-reshaper