Jehovah's Witnesses why Did those who came to arrest Jesus fell to the ground when Jesus said "I Am He"

Read John 18:4-6 4 Jesus therefore, knowing all things that should come upon him, went forth, and said unto them, Whom seek ye? 5 They answered him, Jesus of Nazareth. Jesus saith unto them, I am he. And Judas also, which betrayed him, stood with them. 6 As soon then as he had said unto them, I am he, they went... show more Read John 18:4-6

4 Jesus therefore, knowing all things that should come upon him, went forth, and said unto them, Whom seek ye? 5 They answered him, Jesus of Nazareth. Jesus saith unto them, I am he. And Judas also, which betrayed him, stood with them. 6 As soon then as he had said unto them, I am he, they went backward, and fell to the ground.

I thought this may be a good question before Easter)))
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