This material occurs in no other Gospel. The destruction of Jerusalem that Jesus predicted here was an important event for Luke. It showed God"s judgment on Israel for rejecting His Son and provided evidence that God had turned from working with the Jews primarily and was now working with Gentiles equally. It constitutes an argument for the distinctively new dispensation that resulted from the Jews" rejection of their Messiah. It also gives a reason for the Christian mission on which Jesus later sent His disciples. [source][source][source]