How do we know Christ is the promised heir?

Christ is acknowledged as the promised heir primarily through biblical prophecy and the unfolding of God's covenantal plan. Micah 1:15 describes a future heir who will come to bring hope to the inhabitants of Israel, linking back to the promise made to Abraham in Genesis regarding his offspring. The essential understanding in Galatians confirms that Abraham's heir is Christ, who fulfills the promises and bears the title of the only begotten Son. Thus, Christians view Christ as the culmination of God's promise for an heir who redeems and restores.