Abraham was ready to give Isaac but was no use as his blood was stained with sin, right? So, after 2000 years, God offered His Son, as per the covenant, on the same mountain??
Is the visible scar of the Lord on His wrists and legs and ribs?
I believe Abraham knew that he and Isaac were acting out a prophecy of God sacrificing His Son for our sins. It took place on the very spot that Jesus would be crucified.
In Rev. 5:6 John saw the Lamb, looking as if it had been slain. Most scholars believe this means that Jesus, the lamb, was in human form and bore the scars of His ordeal just as He had in the Upper Room after His resurrection. (John 20:24-27)