Difference of old bibles

As things happen, a catholic bible can come and go. I was recently was amazed when I looked a friend of mine and his catholic bible. When I look at my Bible I have notes. I have highlights and comments. There are Greek and Hebrew words written on the side as well as questions.

I looked at the catholic bible. There were no notes or colors. I asked my religious friend why this was. His comment was that he did not read the bible or even take it to church. Such differences there are in the world.