These two chapters of Luke are quite rich, and in no way can a blog post capture the essence of what has been penned. A preacher could preach a 6 week, or in the case of my pastor, 6 month series on just these two chapters, but here goes:
Luke 11 begins with the “LORD’s prayer.” Then Jesus supplements this teaching, also found in Matthew 5, with more teaching about prayer including a parable of a man asking his neighbor for some bread for a guest. The neighbor will not “yet because of his impudence.” This reminds me of the parable of the widow before the evil judge: he listens to her and gives her justice because of her continued pressing.
In verse 14ff, Jesus was casting out deamons and the religious leaders accused him of basically being “in” with the demons; hence the reason for the authority over them. Jesus teaches them, in fact, a kingdom divided is a weak and powerless one, so it just doesn’t make sense.
Jesus spends the remainder of the chapter playing a game of folleyball with the religious leaders.
Luke 12 contains the parable of the rich fool: a man who “lays up treasure for himself and is not rich toward God.” Jesus then tells his diciples, “do not worry” the LORD will provide for your needs, have faith in Him alone [not wealth].