Simplify the following text for a Grade 8 native English-speaking person.
Original: In Eastern Christianity an iconostasis ( plural : iconostases ) is a wall of icons and religious paintings , separating the nave from the sanctuary in a church .
Simplified: Iconostasis is the name given to a `` wall '' of icons in Eastern Orthodox Churches . These icons or religious paintings divide the church into a part for the public , and one which is reserved to priests , called the sanctuary .