Luke 15 is the fifteenth chapter of the Gospel of Luke in the New Testament of the Christian Bible. The book containing this chapter is anonymous, but early Christian tradition uniformly affirmed that Luke the Evangelist composed this Gospel as well as the Acts of the Apostles. This chapter records three parables of Jesus Christ: the lost sheep, the lost coin and the lost or 'prodigal' son, a trilogy about redemption that Jesus tells after the Pharisees and religious leaders accuse him of welcoming and eating with "sinners".

Luke 16 is the sixteenth chapter of the Gospel of Luke in the New Testament of the Christian Bible. It records the teachings and parables of Jesus Christ, including the account of the "rich man and Lazarus". There is an "overriding concern with riches" in this chapter, although other topics are also covered. The book containing this chapter is anonymous, but early Christian tradition uniformly affirmed that Luke the Evangelist composed this Gospel as well as the Acts of the Apostles.