Jesus uses another question to challenge the Pharisees. Alternate translation: "then you must say your followers also drive out demons by the power of Beelzebul. But, you know this is not true." (See: [[rc://en/ta/man/translate/figs-rquestion]])
Jesus was speaking to the Pharisees. The phrase "your sons" refers to their followers. This was a common way of referring to those who follow teachers or leaders. Alternate translation: "your followers" (See: [[rc://en/ta/man/translate/figs-metaphor]])