Okay kiddo, have you ever seen someone making a sign on their chest like this? (demonstrate the sign of the cross)
Yes? Well, that's called the sign of the cross.
It's a special way that some people show their love and respect for God. When they make the sign of the cross, they are remembering something very important about Jesus.
You see, Jesus is three things all in one: he is God, he is a man, and he is a spirit. When someone makes the sign of the cross, they use their hand to touch three different parts of their body to remember these three things about Jesus.
First, they touch their forehead, which is where their brain is. This reminds them that Jesus is God, and he knows everything just like our brains do.
Next, they touch their belly, which is where their tummy is. This reminds them that Jesus was a man, just like us, and he could feel hunger and other feelings too.
Lastly, they touch their shoulders, one first then the other. This reminds them that Jesus is a spirit that is always with us, and he is watching over us to make sure we are safe and happy.
So, that's why some people make the sign of the cross. It's a way to remember how great Jesus is and how much he loves us.