Your almost 2000 years late with the warning OP.

As for Jesus' telling of when the time would come. "This generation will by no means pass away till all these things are fulfilled." (Matthew 24:34) The destruction of Jerusalem occurred within 40 years of him saying this.


There has been Famine:

One of them, named Agabus, stood up and through the Spirit predicted that a severe famine would spread over the entire Roman world. (This happened during the reign of Claudius.) (Acts 11:28)

False Christs and false teachers

Now for some time a man named Simon had practiced sorcery in the city and amazed all the people of Samaria. He boasted that he was someone great, and all the people, both high and low, gave him their attention and exclaimed, “This man is rightly called the Great Power of God.” They followed him because he had amazed them for a long time with his sorcery. (Acts 8: 9-11)

Persecution of Christians

On that day a great persecution broke out against the church in Jerusalem, and all except the apostles were scattered throughout Judea and Samaria. Godly men buried Stephen and mourned deeply for him. But Saul began to destroy the church. Going from house to house, he dragged off both men and women and put them in prison. (Acts 8:1-3)

Wars and rumors of wars

Too many examples to list including when the Romans destroyed the Temple.