Why is it important for Christians to uphold Christ alone in their message?

The message of Christ alone is foundational to the Christian faith. The sermon emphasizes that anything standing in place of Christ, including personal merits, constitutes idolatry and is subject to destruction. As stated in Mark 13:14, the abomination of desolation signifies anything that diverts focus from Christ's sufficiency. Believers must ensure that their salvation, righteousness, and sanctification depend solely on Christ's finished work, as any addition undermines the purity and power of the gospel. True faith rests fully on Christ, as He is all in salvation for the believer.