Life is always changing.  Americans move on an average of every 5 years.  Even if we continue to live in the same area our surroundings are continually changing.  Friendships change.  Jobs change.  We change.
Because we live in a constant state of change, God has provided us with a living hope.  That means each new circumstance brings us a new perspective of the hope that is in us (1 Peter 1:3).