Why is the concept of common faith important for Christians?

The importance of common faith lies in its definition as the faith that all believers share, a gift from God rather than a personal exercise. Jude 1:3 speaks of 'the faith which was once delivered unto the saints,' highlighting that there is only one true faith that looks to Christ alone. This common faith dispels individualistic notions of belief, reinforcing that true faith is a result of life in Christ rather than a self-generated action. Believers depend on God's grace to increase their faith and to comprehend His truth. As such, these commonalities bind Christians together in unity under the lordship of Christ, enabling them to support one another in their shared belief and trust in His finished work of salvation.