Parallel
Mark 9:20
Patriarchal Greek New Testament (1904) · Berean Standard Bible
καὶ ἰδὼν αὐτὸν εὐθέως τὸ πνεῦμα ἐσπάραξεν αὐτόν, καὶ πεσὼν ἐπὶ τῆς γῆς ἐκυλίετο ἀφρίζων.
So they brought him, and seeing Jesus, the spirit immediately threw the boy into a convulsion. He fell to the ground and rolled around, foaming at the mouth.