run and not grow weary

Verse 31 of Isaiah 40 is a well-known muchly quoted one: 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. Which is great and has become a huge source of strength and encouragement... BUT if you skip the lead up into that verse you miss out on so much more: Isaiah 40.27-31 [...]