As a pastor, one of the things that I deal with is death. I have officiated in the burial of many people: young and old, rich and poor, those who claim Christ, and those who do not. For Christians, there is a different perspective on death than unbelievers. When we lose a Christian, we grieve differently. We shed tears in a different way.
Because we know where they are and Who they are with, we can be comforted.
We can grieve differently because we know there is a place with no more suffering, tears, or pain (Revelation 21:1-4). Heaven, like the garden of Eden was intended to be, is a perfect place.
Better yet than where they are is Who they are with. That Who is Jesus. They will be in His perfect presence without the encumbrance of the world, sin, or anything else that keeps us from seeing Jesus clearly (Revelation 22:1-5). Nothing can be more comforting than that.
Because we know where they are and Who they are with, we can be comforted. Since their pain is over, and not just...