The main purpose of a sponge is to soak things up. When you squeeze a sponge, whatever is inside comes out. Both of these characteristics of a sponge provide metaphors for our hearts. Some of us have hard hearts and unlike a sponge, things just stay on the surface and never affect us while other have receptive hearts to God. When we are under pressure, we truly get to see what is in a person's heart. These games are great for a little wet time during the hot summer and provide a nice illustration for the condition of our hearts.
