The horrible things that Jesus went through before His death may be a difficult thing to explain to small children. But helping them understand the reality of what He did for us is very important. One way to help them begin to understand, is by helping them to see what the outcome of his suffering was.
Jesus’ death and resurrection opened the door of communication between God and humanity. Our sin stands as a barrier, but when Jesus took that sin upon himself and paid our penalty, that barrier was removed.
To help children visualize this lesson, you can explain that God allowed the cords of Jesus suffering to be part of the process to open the communication to Him. The activity that can help understand that new communication between God and man can be making an old fashion can/cup telephone. Punch a hole in the bottom of a cup or can and thread the cord through. Put a can on the other end and pull the cord taunt. You will then be able to hear a voice talking into the other end. This is an old fashion craft that is just as fun today.