Then the Jews demanded of him, “What miraculous sign can you show us to prove your authority to do all this?” Jesus answered them, “Destroy this temple, and I will raise it again in three days.” The Jews replied, “It has taken forty-six years to build this temple, and you are going to raise it in three days?” But the temple he had spoken of was his body. After he was raised from the dead, his disciples recalled what he had said. Then they believed the Scripture and the words that Jesus had spoken. (John 2:18–22, NIV 1984).
My Musings – “Then they believed.” When? “After he was raised from the dead.” In other words, after He did what He said He would do — rise from the dead. Want a miraculous sign? It doesn’t get more miraculous than that. Up to that point, His disciples had only seen Him turn water into wine. Perhaps its not surprising that they didn’t catch on at this point, but eventually they did believe. Sadly there’s no indication that those who sought the miraculous sign (the religious leaders, apart from Nicodemus and Joseph of Arimathea) ever did.
But what about us? We have the four Gospels, recording all sorts of things that occurred in His life that were prophesied hundreds of years earlier in the Old Testament. Just what the prophecies said would happen did happen. Impossible to orchestrate. The only way they could have all been fulfilled is if He was exactly who He said He was. Yet many still choose not to believe. But if He is exactly who He said He is, then we need to believe everything that He said.
My Advice – And He said, we must be born again in order to see the Kingdom of God (Heaven). Don’t wait to see how things play out. They’ll play out exactly how Jesus said they would. But then it will be too late. Now is the day of salvation. Tomorrow is not guaranteed. Read the Gospel of John. It’s just as good in telling you all you need to know to be saved (born again) as it was in the good ol’ days.