How do we know Christ came to save only His elect?

The sermon discusses how Jesus' mission was not to save all men indiscriminately, but specifically for His brethren—those whom God foreknew and predestined. Romans 8:29-30 illustrates that those whom God foreknew, He also predestined to be conformed to the image of His Son. Therefore, Christ's coming was intentional and directed; He came for those who were eternally united with Him. This is vital because it emphasizes that the intent behind Christ's atonement was to save His particular people, providing assurance that all whom He intended to save will indeed be saved.