How do we know that Christ actually saves His people?

The assurance that Christ saves His people is found within the gospel narratives and the prophetic writings of the Old Testament. As seen in Zechariah 14, the Lord declares His intention to save His people decisively from their sins. This salvation is not based on human decision or inclination, but on God's sovereign grace, as affirmed in Matthew 1:21, which states, 'He will save His people from their sins.' The distinction lies in the effectual nature of Christ's work; He saves those whom the Father has given to Him, ensuring that all within this group will indeed be called and redeemed. Such assurance is not merely wishful thinking but rooted in the character and promises of an omnipotent God.