Of what truths particularly should the bereavement experience remind us? Said the Puritans characteristically, the three that follow:
1. The reality of God's sovereignty - that we, like everyone else, are always in his hands, and neither bereavement nor anything else occurs apart from his overruling will.
2. The reality of our own mortality - that we, like everyone else, are not in this world on a permanent basis and must sooner or later leave it for another mode of existence under other conditions.
3. The reality of heaven and hell - that we leave this owrld for one or the other, and that we should use the time God gives us here to unsure that as saved sinners we shall go to heaven, rather than as unsaved sinners go to hell.
From the section "The Sanctifying of Grief" from A Grief Sanctified by JI Packer, page 188.