John 18:8 Meaning

6As soon then as he had said unto them, I am he, they went backward, and fell to the ground.

7Then asked he them again, Whom seek ye? And they said, Jesus of Nazareth.

8Jesus answered, I have told you that I am he: if therefore ye seek me, let these go their way:

9That the saying might be fulfilled, which he spake, Of them which thou gavest me have I lost none.

10Then Simon Peter having a sword drew it, and smote the high priest's servant, and cut off his right ear. The servant's name was Malchus.