There are many OT allusions to the nature of the coming messiah, from
Genesis 3:15 right through to Isaiah 53 and others.
Gen 3:15 says, “I will put enmity between you and the woman, and between your offspring and hers; he will crush your head, and you will strike his heel.” This is known as the protoevangelium—the first gospel. The verse introduces two elements previously unknown in the Garden of Eden, elements that are the basis of Christianity—the curse on mankind because of Adam’s sin and God’s provision for a Savior from sin who would take the curse upon Himself.
If people could have read and understood the implications of these verses, does it not seem plausible that the author of deception could have woven his fake news religions full of echoes of the story of the one who was to come?