Sponge or towel and water
Show your children a dry sponge or towel. Allow them to put it in a bowl of water and see what happens. The sponge soaks up all the water.
Explain that when Jesus was beaten and crucified, He took our sins and our sicknesses upon Himself, just like the sponge soaked up the water.
Now, wring out the sponge, and do it again. This time, explain that as Christians we need to soak up God’s Word, so when we get sick or are diagnosed with a disease, we can be full of His Word and promises regarding health. When we are full of God’s Word, it will soak through us and permeate our spirits and faith so we can live with the healing God promises us.