What/How does Beah foreshadow Saidu's death?

Saidu foreshadows his own death when he says, “How many more times do we have to come to terms with death before we find safety? . . . Even though I am still alive, I feel like each time I accept death, part of me dies. Very soon I will completely die and all that will be left is my empty body walking with you. It will be quieter than I am.”