Set your mind on things above, not on things on the earth - Colossians 3:2
When I lose my cell phone, I will get another phone and dial my number in an attempt to find it, hoping it is not on mute. Then when I hear it ringing somewhere, I will go on a search to find it. It is a single-minded, active, and diligent investigation. That is what the apostle Paul was speaking of when he wrote, "Set your mind on things above, not on things on the earth" (Colossians 3:2). That is how we should be looking at heaven.
Another way to translate this verse is, "Think heaven." In the original language, the verb is in the present tense, which could be translated, "Keep seeking heaven." So to put it all together, the apostle Paul was saying, "Constantly keep seeking and thinking about heaven."
So how can we be thinking about heaven? What is our point of reference? The problem is that we have a caricatured version of heaven in mind. We are not going to sit around on fluffy, white clouds, spending eternity in boredom. The Bible has a lot to specifically say about heaven.
That is why, when people write books about their alleged experiences of dying and going to heaven and returning to earth, it takes me to the pages of Scripture. It is not true if it contradicts Scripture. I know that I need a better source, a more authoritative source on heaven. I turn to Scripture so that I can know how to think when I think about heaven.
Even though our feet must be on earth, our minds should be in heaven. Yet many of us will go through a day, even a week, without a single thought of heaven. As Warren Wiersbe said, "For the Christian, heaven isn't a simply a destination; it's a motivation."