The second use of Satan refers to the demons that serve Satan. AT: "If Satan works against his own demons" (See: [[rc://en/ta/man/translate/figs-metonymy]])
Jesus uses this question to show the Pharisees that what they were saying was illogical. AT: "If Satan were divided against himself, his kingdom would not be able to stand!" or "If Satan were to fight against his own demons, his kingdom would not last!" (See: [[rc://en/ta/man/translate/figs-rquestion]])
Jesus uses another question to challenge the Pharisees. AT: "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. AT: "your followers" (See: [[rc://en/ta/man/translate/figs-metaphor]])