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

Jude 3 admonishes believers to 'earnestly contend for the faith which was once delivered unto the saints.' This instruction is vital because it ensures that the true gospel, which centers on Christ's work and exclusivity, remains pure from false teachings. In a time when various ideologies attempt to distort the truth, Christians must be vigilant against misleading doctrines that could undermine their understanding of salvation. Moreover, contending for the faith fosters community, as believers support each other in holding fast to the truth, thereby building one another up in their most holy faith.