We are suppose to spread the gospel to every nation. This might involve prayer, making intercession for the saints, witnessing to those who have never heard or haven't heard enough, teaching, pastoring or anything else God has called you to do to spread the gospel.
The apostle Paul said in I thess 2:19
Our hope should be a motivator to serve God and get others to be in the presence of our Lord Jesus Christ at His coming.For what [is] our hope, or joy, or crown of rejoicing? [Are] not even ye in the presence of our Lord Jesus Christ at his coming?
Is our study of the end times an obstacle to fulfilling our commission or is it a motivator to do more to spread the gospel. It can go either way so we need to be diligent to make sure our study of end times is a motivator to excel at doing whatever God has called us to do to spread the gospel