I think this situation with my dad is like walking around with a rock in your shoe.
Every once in a while it is almost unnoticeable, like that rock has rolled to the one part in your shoe that inflicts the least amount of discomfort.
Other times, the pain takes your breath away and you immediately have to stop and sit down. One more step may be more than you can handle.
Regardless of the location, you never really forget it is there. And if you had your choice, you would gladly chuck that thing in the dirt.
I think that rock, in a very strange, mysterious way, is one of the many ways God woos us to Him.
Rocks point to His grace, His extravagance, His provision.
Rocks remind us that we actually need Him.
"But he said to me, 'My grace is sufficient for you,
for my power is made perfect in weakness.'
Therefore I will boast all the more gladly about my weaknesses,
so that Christ’s power may rest on me."
~2 Corinthians 12:9