How do we know that grace is for designated people?

In the sermon, it is highlighted that while God's mercies extend over all His works, His grace is specific to a chosen group. The Apostle Paul writes about grace that was given to us in Christ, even before the world was made. This points to the doctrine of election, illustrated in Scriptures like Ephesians 1:4-5, where God's purpose is to demonstrate His grace to His chosen ones. Believers rejoice in the fact that they have been drawn to the gospel because of God's everlasting love, a love that is not contingent upon our merit but solely upon His sovereign will.