We had a guest speaker at my church today who specializes in eschatology. When I say specializes, I mean he has had years of studies in the area. He mainly talked about different theological teachings such as premillennialism, amillennialism, postmillennialism, dispensationalism, covenant theology, and replacement theology. If you are unfamiliar with these terms, I encourage you to look them up because they are important and it would take up too much space to define them all.
The main point was premillennialism vs amillennialism, not to be confused with pre-tribulation and post-tribulation. This is an interpretation about Revelation chapter 20 when it talks about Christ reigning for 1,000 years. Premillennialist believe that is a literal 1,000 years and that in order for it to happen Jesus Christ has to return. In contrast, amillenialists believe that it is not a literal 1,000 years and that it has already happened. They believe it is a spiritual reign not physical.
He then raised an interesting question. Do we put too much emphasis on heaven? It sounds like a ridiculous question, but let me explain. If a believer dies, he goes to heaven and everything is good for him, but there is still evil on earth. If this doesn't sound important take a look at Jesus' model for prayer in Matthew chapter 6.
"Your kingdom come. Your will be done On earth as it is in heaven."
Should we really be anticipating God's kingdom instead? Premillennialist believe that Jesus' 1,000 year reign is the first step.
1 Corinthians 15:24-25
"Then comes the end, when He delivers the kingdom to God the Father, when He puts an end to all rule and all authority and power. (25) For He must reign till He has put all enemies under His feet."
I know this is deep stuff and I by no means consider myself an expert, but I am starting to become more interested in this. In my opinion this makes sense because while evangelism is great and commanded by God, the overall purpose is to give God Glory.