Or the we in which Paul stated applies to the church - those that remain alive at the 2nd coming and the resurrection. as you posted="For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep." No one knew of the day or hour of that day not even the Son Only the Father so Paul couldn't have been given/known a date that it was in His lifetime. The "we" is speaking of all christians as Jesus will gather His elect from the ends of the heavens on that day. It is not a possible answer that Paul was speaking of His day. I think Paul saw His death in Rome beforehand. But went anyway so that the gospel could be preached in Rome.