It prevents the screen from having images burned into it.

If your screen is running a screen saver, then you already have it. It is already saved on your system.

Screen savers are changed in the Desktop and Screen saver section of the System Preferences. Select the desired screen saver in the left hand pane or tick the Use random screen saver box.

I great site to find a screen saver of Bible Verse is to checkout Cnetdownloads.com they have this screen saver available for no cost. Another site to checkout is crosscards.com they also have this screen saver for free.

You look up in the elements, Click Screen saver and there you have it. There are 2 screens which you can customize in IOS: The lock screen, and the desktop screen.

The iPad doesn't have a traditional screen-saver function, as it goes to sleep and wakes up instantly to save battery power.