(1Co 15:3) “For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures;” The phrase, “according to the Scriptures”, is referring to the prophecies found in the Old Testament. Here’s one: (Isa 53:5) “But he was wounded for our transgressions, he was bruised for our iniquities: the chastisement of our peace was upon him; and with his stripes we are healed.”