Why is the persecution of Christians mentioned in the Bible?

The Bible acknowledges that persecution is an inevitable experience for Christians who stand firm in their faith and testify to the truth of the gospel. In John 15:18-19, Jesus warns His disciples that if the world hated Him, it will also hate them because they are not of the world. This reality underscores the stark contrast between the values of the world and those of Christ. While it may seem daunting, these instances of persecution serve as a witness to our identification with Christ, who was persecuted and ultimately condemned for His truth. This draws believers closer to God, reminding them that their hope and comfort comes from being known as children of God amidst adversity.