In John 15:18, the passage discusses how if the world hates you, remember that it hated Jesus first. It emphasizes that those who belong to Jesus are not of the world, which is why the world may show animosity towards them. This message conveys the idea that being chosen by Jesus sets believers apart from the world, leading to potential hostility from those who do not share the same faith. The message of "One Love ❤️ 1UT" further underscores the theme of unity and solidarity among believers in the face of opposition or hatred from the world.