A Witness Emoji?

I saw this billboard and maybe I’m slow or something, but it took me a few minutes to get the message. My first thought was why pray to the sun? People don’t worsh20160108_011035678_iOSip the sun anymore! Then I thought, oh…the Son, because of the halo! Then I thought, why the sunglasses? Then I realized the SON shines brighter than the sun!  It is a bit obscure, I guess it could be a witness?