Renewed strength for the weary

Following an earlier post that sparked interest in it, some of Infusion watched Chariots of Fire last night. In the film, Eric Liddell reads from Isaiah 40:

Even youths grow tired and weary, and young men stumble and fall;
but those who hope in the LORD will renew their strength.
They will soar on wings like eagles; they will run and not grow weary,
they will walk and not be faint.

[stained glass window in St Bernard's Church, Wengen, Switzerland]