Jesus uses parables to teach those around him kingdom truth. A parable is when a known truth is placed beside something unknown and a bridge is built between the two so that the person...
A wise woman builds up her house.
Jesus teaches those around him it is not enough to be healed but that a person must be born again and indwelt by the Holy Spirit.
The religious leadersa ask Jesus for a sign to prove to them that he is the Messiah. Jesus gives his response to the religious leaders in such a way that they have to have faith to see.