NET
20 So they brought the boy to him. When the spirit saw him, it immediately threw the boy into a convulsion. He fell on the ground and rolled around, foaming at the mouth.
Darby
20 And they brought him to him. And seeing him the spirit immediately tore him; and falling upon the earth he rolled foaming.
KJV
20 And they brought him unto him: and when he saw him, straightway the spirit tare him; and he fell on the ground, and wallowed foaming.