The correct answer to this open question is the following.
Unfortunately, you didn't attach the excerpt, the text, the link to the text, or another helpful reference to answer your question. Without the excerpt, we do not know what you are talking about.
However, trying to help you, we did some research and comment on the following.
The question that most likely helps you understand the excerpt from a speech given by Martin Luther King Jr is: "What kind of suffering did King
think was coming?"
In an excerpt of the speech delivered by Luther King, we can read that he feels that there are many difficult days ahead of his civil rights fight. He thinks that probably, suffering is part of the road ahead. However, he invites his followers to keep the faith and continue to protest and having non-violent demonstrations as a way to transform the racial situation in the south. For him, that was the path to change.