And if I by Beelzebub (ei de egw en Beezeboul). Also a condition of the first class, determined as fulfilled. A Greek condition deals only with the statement, not with the actual facts. For sake of argument, Jesus here assumes that he casts out demons by Beelzebub. The conclusion is a reductio ad absurdum. The Jewish exorcists practiced incantations against demons ( Acts 19:13 ).