How do we know Christ's power is certain?

The certainty of Christ's power is affirmed in His identity as the Son of God, who possesses divine sovereignty and authority. As stated in the sermon, Christ's work of redemption is assured; He will deliver all of His people completely from their sins, as emphasized in Micah when God promises to gather His people (Micah 2:12). Christ's declaration on the cross, 'It is finished' (John 19:30), underscores the certainty and finality of His redemptive work. His ability to save is not based on human merit but on His perfect and sovereign will, making His power certain and trustworthy for all who believe.