A road sign tells you tells a traveller the where they are going next; it also tells them where they have come from and where the ultimate destination is.
It will help your reader navigate your writing if you use signposting phrases that remind your reader of where the piece of writing has been, and let them know where it is going. Even better is to explain how one leads to the other!
Helpful signposting phrases include ‘in this essay I will show…’, ‘as I have argued…’, ‘having discussed x, I now turn to y.’
See this Newcastle University webpage for more on signposting
Next page: the conclusion