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

Jude exhorts believers to 'earnestly contend for the faith' (Jude 1:3), which speaks to the urgency of defending the Gospel against false teachings. This perseverance is crucial because it protects the integrity of the Gospel and ensures that believers remain steadfast in truth, especially in perilous times when heresies can arise from within the church. Striving for the faith keeps the focus on Christ's work and upholds the truth that was once delivered to the saints (1 Timothy 6:12).