This tells us plainly that they were living in the time of the end, not us. The "last days" weren't stretched out for thousands of years, they were the final days of the Old Covenant age, which was about to be fully removed in their generation (Hebrews 8:13).

It means the last days were not about the end of the physical planet, but the end of the covenantal age. The first-century believers were the ones upon whom the culmination of all previous ages had come. That's why Peter could say, "the end of all things is at hand" (1 Peter 4:7), and the writer of Hebrews said, "He has appeared once for all at the consummation of the ages" (Hebrews 9:26).

So if the end of the ages had come upon them, it cannot be about our future. It was their present.

Audience Relevance Matters: Paul was writing to first-century Corinthians, not to us. He said "upon whom the ends of the ages have come," meaning it was their generation experiencing the transition from the Old Covenant to the New. If the end had come upon them, then we are not in the last days, they were.

This Matches Jesus' Timeline: Jesus said "this generation will not pass away until all these things take place" (Matthew 24:34). Paul's statement confirms Jesus' prophecy was unfolding in their time.

It Confirms Imminence Was Real: Many futurists try to water down the meaning of "at hand," "soon," or "about to be," but Paul's words here prove that the early church truly expected and was experiencing the end of the age.

It Ties to Daniel's Prophecy: Daniel spoke of the "time of the end" (Daniel 12:4, 9), not the end of time, but the time when the Old Covenant system would come to a close. Paul is confirming that time had arrived.

The Word "Ages" Is Plural: Paul says "ends of the ages," implying that multiple prior covenantal ages were reaching their fulfillment in that generation, not just the end of one era, but the climax of redemptive history that had been unfolding since Adam.

Cross Reference with Hebrews 1:2: God "has spoken to us in His Son... in these last days", not "He will speak in some future last days." They were already in them.