samsung galaxy s 4 - Show messages on lock screen

I'm looking for some sort of way that will show part/all of my text messages, emails, tweets on the screen when the phone is locked.

I just gave up my iPhone and this is something I'm really missing.

To me it is annoying to have to click on a message just to see if the person responded "ok" or something that could easily be displayed on the screen.

Here is a screen shot of the messaging. I want to be able to read the text.