explain the significance of the final speech of the chapter?

One of the elders gives a speech thanking and praising Okonkwo. But the speech ends on an ominous note: the elder fears for the future of their people. The new religion has come, and some people of the clan have betrayed their tribe's beliefs. He worries that the Igbo way of life is threatened. The elder's speech, placed at the end of the chapter, which is also the end of Part Two, hints that Okonkwo's return to Umuofia may be far more difficult than he had hoped.