A Voice from the Past - Ambrose

By the death of  One the world was redeemed. For Christ had He willed, need not have died, but He neither thought that death should be shunned as though there were any cowardice in it, nor could He have saved us better than by dying. And so His death is the life of all.

Ambrose of Milan, 337-397 AD, On Belief in the Resurrection, Book II of On Decease of His Brother Satyrus, 46 (translated by Rev. H. De Romestin, The Nicene and Post-Nicene Fathers, Philip Schaff and Henry Wace, T & T Clark and Wm. B. Eerdmans Publishing, 1997, Second Series, Vol. X, p. 180)

How does Christ's death bring life? How does that affect our understanding of death?