And whenever it seizes him, it throws him down, and he foams at the mouth and grinds his teeth and becomes rigid. So I asked your disciples to cast it out, but they (ischusan | ἴσχυσαν | aor act ind 3 pl) were (ischusan | ἴσχυσαν | aor act ind 3 pl) not able.” (ischusan | ἴσχυσαν | aor act ind 3 pl)
Reference
Mark 9:18
Sequence
7