Why is the concept of God's holiness important for Christians?

God's holiness is a fundamental characteristic that shapes the Christian understanding of His nature and the requirement for salvation. In the sermon, it’s emphasized that God will not change His holiness nor relax His standards for righteousness. This is vital because it reveals that human efforts to attain righteousness through works are inadequate—the heart of man is inherently wicked. Thus, understanding God's holiness compels believers to recognize their need for Christ's perfect righteousness, granted through faith. This reinforces the gospel message that salvation comes solely through Christ's atoning work.