Your conclusion paragraph is a bit like the reverse of your thesis. Where your thesis presents the core idea from all three of your topic sentence, your conclusion sentence presents the core idea from each of your conclusion sentences.
Just like your conclusion sentences, your conclusion statement should focus on real life. For that reason, it's unnecessary to mention the text by title, or referencing anything specific about the text. Remember that that purpose of a literary essay is to use literature to explore truths about human nature or human experience: you want to start with the text, but you want to end up (or conclude) with insights into real life. If you mention the text, or any textual elements in your conclusion, then you are limiting your insights to just the text, instead of offering a more universal lesson.
Just like your thesis presents the core idea from each of your topic sentences, your conclusion statement should do the same by starting with your conclusion sentences from your body paragraph and condensing them to a short phrase. Here's a set of examples from a theme analysis essay, exploring the concept of heroism as seen in To Kill a Mockingbird and The Odyssey:
Starting with these conclusion sentences:
In the face of danger, heroes display courage and fight for respectable causes, helping encourage people to continue on in situations where success seems unlikely.
Persistence is a necessary attribute amongst heroes, because it allows them to maintain a strong will during crucial times, and in turn influences others to persevere through challenging circumstances and fight for what is right.
All heroes must display intelligence, because it helps them succeed more easily, consequently allowing others to benefit fully from their actions and pressuring others to perform heroic acts.
These three conclusion sentences are combined into this conclusion statement:
Heroes display courage, perseverance, and intelligence, which allows them to better the world by instilling their message of hard work and selflessness in the minds of many, furthermore prompting others to perform heroic tasks.
This conclusion statement clearly makes reference to each trait mentioned in the conclusion sentences, and finds a common connection between all of them. Looking at this sentence, it's clear that the essay makes a point about real life and human nature, but it's also not hard to see how these ideas can be relevant to The Odyssey and To Kill a Mockingbird.