Have you ever heard a story about a superhero? Like Batman or Spiderman? Well, a long, long time ago, in a land far away, people believed in a superhero too. They called him the "Messiah".
The Messiah was a special hero that people believed would come one day and save them. But how did they know that he would come? They read special books called the "Old Testament," which had lots of stories and teachings about him. And in these books, there were things called "prophecies."
A prophecy is like a prediction. It's something that someone says will happen in the future. And in the Old Testament, there were many prophecies about the Messiah. They were like puzzle pieces that people had to put together to figure out when he would come and what he would do.
One of the prophecies said that the Messiah would be born in Bethlehem, and another said that he would be from the family of Jesse, King David's father. There were even prophecies that said he would perform miracles, heal the sick, and be rejected by his own people.
Christians believe that Jesus was the Messiah that people had been waiting for. They believe that he fulfilled all of the prophecies in the Old Testament, and that he came to save people from their sins.
So, in short, Christian messianic prophecies are special predictions in the Old Testament that foretold the coming of the Messiah, who Christians believe is Jesus. They help Christians understand why they believe Jesus is the Savior and give them hope for the future.