in my (selfish) heart of hearts i don't really want change except for this - that tomorrow be pretty much the same as today, except maybe a little bit better.
Christians have a hope in amazing change, their entire lives are invested with change, their very nature is defined by a change that begins at conversion and ends in glory - never actually ending at all, since an eternity of relationship with God will only reveal more and more his glory as we grow in our renewed, intimate relationship with him.
we fear it and hope for it all in the same breath. change is tomorrow, it's the unknown - it's the unknowable. like turning on your computer every day, starting your car every day - no change in what we do but constant change in how we do it, what we're doing it to, what we're doing it with - all changing so continually and minutely and imperceptibly.
our dna changes every time it replicates, apparently. something like this: each time a dna strand is copied there's a little tail on the end that is the strand's use-by date, effectively. when that tail tails off, so to speak, the dna strand stops replicating properly and the cells it's a part of begin to break down. old age. there are strands of dna inside us that are leftover from x-number of copies when we were in the womb! how true it was that the psalmist says,
For you formed my inward parts;
you knitted me together in my mother's womb.
I praise you, for I am fearfully and wonderfully made.
Wonderful are your works;
my soul knows it very well.
My frame was not hidden from you,
when I was being made in secret,
intricately woven in the depths of the earth.
Your eyes saw my unformed substance;
in your book were written, every one of them,
the days that were formed for me,
when as yet there were none of them.
Psalm 139:13-16 (ESV)