Why is it important for Christians to contend for the faith?

Jude calls believers to 'contend for the faith once delivered to the saints' because the integrity of the Christian message is continually threatened by false teachings and ungodly influences. This call emphasizes a diligent and earnest effort to uphold and defend the truth of God’s Word against prevailing errors. The act of contending is not meant to incite contention; rather, it serves to unify believers in their testimony of faith and safeguard the church from deception. Such vigilance is essential to maintain the purity of the Gospel and to demonstrate the truth of God's Word in a world rife with misleading ideologies.