What does the Bible say about the world's hatred for believers?

In 1 John 3:13, believers are instructed to marvel not if the world hates them, as this hatred is rooted in the world's enmity towards Christ. John clarifies that this world represents those who are not chosen by God and are under the influence of the devil. When a believer stands for the truth of the gospel, they align themselves with Christ, resulting in rejection and hostility from the world. This is further illustrated in John 15:18-19, where Jesus informs His disciples that the world will hate them because they are not of it, just as He is not of it.