It is not very hard to find unfulfilled prophecies in Scripture. Now some have misinterpreted, for instance, Luke 24. Jesus is explaining what has happened after His resurrection from the dead.

“26 Didn’t the Christ have to suffer these things and to enter into his glory?” 27 Beginning from Moses and from all the prophets, he explained to them in all the Scriptures the things concerning himself.”
Lk 24:26-27 WEB

Some have gone a little beyond what it says here, and claim that Christ fulfilled (past tense) ALL of prophecy.

Some do the same with Acts 3.

So they quote,

“But the things which God announced by the mouth of all his prophets, that Christ should suffer, he thus fulfilled.”
Acts 3:18 WEB

So they say, see! Christ has already fulfilled all prophecy. But it does not say that. Rather it says that the prophecies about what “Christ should suffer, he thus fulfilled.” That is much different.

Further, they tend to completely ignore the very next three verses.

“19 “Repent therefore, and turn again, that your sins may be blotted out, so that there may come times of refreshing from the presence of the Lord, 20 and that he may send Christ Jesus, who was ordained for you before, 21 whom heaven must receive until the times of restoration of all things, which God spoke long ago by the mouth of his holy prophets.”
Acts 3:19-21 WEB

So there are “times of restoration” verse 21, and Jesus must stay in heaven until these times, and God spoke of these things long ago by the mouth of his holy prophets. So there are prophecies which have not yet been fulfilled. It even goes further than this a few verses down, where it says,

“Yes, and all the prophets from Samuel and those who followed after, as many as have spoken, they also told of these days.”
Acts 3:24 WEB

Some of this is anti-prophecy material

Many have a vested interest in our not understanding the prophets. They are pertinent not only to us, but to the entire Christian age.

Peter tells us prophecy is the lamp of our age.

“We have the more sure word of prophecy; whereunto you do well that you take heed, as to a lamp shining in a dark place, until the day dawns, and the day star arises in your hearts:”
2Pe 1:19 WEB

That itself tells us that much is yet to be fulfilled. And in context Peter is talking mainly about Old Testament prophecy as a “lamp shining in a dark place” for the Christian Age. For he says,

“20 knowing this first, that no prophecy of Scripture is of private interpretation. 21 For no prophecy ever came by the will of man: but holy men of God spoke, being moved by the Holy Spirit.”
2Pe 2:20-21 WEB

Someone is mixed up!

Either Peter is mixed up when he calls prophecy the lamp of our age … or you and I are mixed up.

The rest is common sense, and carefully looking at the passages we are reading.

WEB is the World English Bible, a copyright free revision
of the original ASV American Standard Version 1901