I don't think foreknowledge, which I know God sometimes gives, is necessarily prophecy
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My grandfather and grandmother, sitting together in their home, on an evening in 1915, both saw a vision that appeared before them. The vision was of a neighbor in a casket. The next day, they were told by other neighbors, that the man had committed suicide that night. The vision, being immediately realized, and though tragic, increased my grandfather's faith in what had already been a tragedy filled life prior to that, to be able to endure an increasingly more tragic life yet ahead.
I had a dream concerning a serious illness I would have. I thought it was just a common dream. Until I started the experience of going through the illness. I experienced the Lord's intervention and His comforting to go through the experience. Everything happened exactly as it was in the dream. He went through the valley with me, and I was faith filled throughout, because of the foreknowledge I was given. Just as in the dream, the doctors were confounded by what I experienced. After being sent to several specialists, for follow up visits, they still don't understand. It's not meant for them to understand. It was meant to increase my faith.
H.E.L.P. ministrie's Scottie Drake is a member of our church. He testified of Iraqi Christians in underground churches in Iraq that had abandoned Islam. They had heard scriptures spoken to them in dreams. They had never heard scriptures before. Then they found out the scriptures they heard were words Jesus had spoken in the New Testament. Scottie Drake also fell ill and into a coma for a few weeks, 1.5 years ago. He came very close to death but the Lord restored him.
In every instance of foreknowledge, the result was bringing to faith or increasing faith.