What is the most important prophecy in the scriptures?
For as many students of the Word as there are, there will be that many answers to such a question. I think Genesis 3:15 or Isaiah 53 would definitely have to be considered as possible answers, but I think there is something else that may be more practical to the student of the Word in relating time as it is happening to biblical prophecy. It may be a bit obscure, but Amos 3:7 turns out to be eminently practical in relating what is happening in time and what has happened in time to biblical predictions about what would happen. It's a prophecy about prophecy.
In fact, Amos 3:7 is a hermeneutical powerhouse!
I take this passage to mean that if something occurs that is significant to God's redemptive plans for the human race, God is going to reveal those events to his prophets. Occurrences which have significance to God's plan are not going to pass by without mention, without notice from him to the faithful. The practical aspect of this reality is that when significant events happen to Israel or in the world which Christ is in the midst shepherding toward an end, those events will be found to have been foretold by one of God's writing prophets.
Where such a supposition really finds practical application is in understanding redemption history during the Church Age. For instance, events like the disintegration of the Pax Romana with its long-term impact on European (and therefore church) development, or the pandemic of Bubonic plague in the 1340's with its worldwide jolt to population and culture, or the rise of Adolf Hitler and the Holocaust, no doubt, affected the flow of redemption history, and therefore, should be anticipated to be foretold by prophecy in the Bible.
If this is so, one has to wonder where in the Bible might the earth-shattering events that have befallen mankind during the Church Age be prophesied. I think the most likely place to look is in the prophecies found in the New Testament. The very last prophetic revelation, the Apocalypse, is generally supposed to have been inspired in 95 CE. It makes "Amos 3:7 sense" that the Lord would show his servants, the New Testament Apostles, those plan-of-redemption affecting events that would happen during the Church Age.
If this is so, one has to wonder where in the Bible might the earth-shattering events that have befallen mankind during the Church Age be prophesied. I think the most likely place to look is in the prophecies found in the New Testament. The very last prophetic revelation, the Apocalypse, is generally supposed to have been inspired in 95 CE. It makes "Amos 3:7 sense" that the Lord would show his servants, the New Testament Apostles, those plan-of-redemption affecting events that would happen during the Church Age.
What doesn't make sense is thinking that God would have only commented about the last 7 years of time in these prophecies and remained quiet regarding the earth-shattering events that have happened in the mean time. If we see Amos 3:7 as a prophetic hermeneutic, it allows us to interpret New Testament prophecy in a broader light than has been generally accepted. Doing so, we may just find out that God has not left us in utter darkness concerning what's been going on in his redemptive management of history these last 2000 years.