How did Christ fulfill His role as High Priest from the beginning?

From the foundations of the world, Christ was appointed as the High Priest for His elect, evidenced by His foreknowledge of man’s sin in the garden (Genesis 2-3). He declared the consequences of sin but also the promise of redemption through the Seed of the woman (Genesis 3:15). This foreshadowed His ultimate sacrifice and intercession, demonstrating that salvation was always in His plan and that He calls His people to faith through the preaching of the Gospel throughout all generations.