✓ small dim flashlight
✓ large high-intensity light
✓ Bible
Darken the room. If necessary, hang dark sheets in front of the windows.
Read John 12:46 to your kids. Turn off the light and turn on the dim flashlight. (Keep the high-intensity light hidden.) Ask the kids if they think the dim light is a good representation of Jesus. (Take any answer.). Ask them if they can tell you why Jesus described himself as the light. (Light in the Bible represents purity while darkness represents sin.)
Take out the bright light and ask, "Do you think this is a better representation of Jesus?" Shine the light at the children, but move it quickly so that no child is exposed to the light for more than a split second but gets enough light to turn their eyes away. (Take their answers.)
Show them on a wall or darker part of the room how the light pushes back the darkness.
Then read John 8:12 and explain that if they put their faith in Jesus and follow Him who died on the cross for their sins, Jesus will forgive them their sins and His light will replace their sinful darkness. First, their sinful heart will be made new, without sin. Second, the Holy Spirit will live inside them and help them turn away from sin. Third, one day all sin will be removed from them and they will be given glorious bodies that cannot sin.