Thankfully, having a theme that flows well for RTL languages (such as Arabic) is largely a matter of updating your CSS. With a few design considerations and style tweaks, you can adapt any WordPress theme to work with RTL languages. (google)
see the post
How to Add RTL Support to Your Custom WordPress Theme
Given that a good number of people read right to left natively, it's important to cater to them. This post will show you how to do it!
