Just Keep Swimming

I was in a Bible Study on Isaiah last year and we studied this familiar passage:

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.

Isaiah 40: 30 & 31

During our discussion a friend of mine made a comment that I think on often.  In a nutshell, she said that people tend to focus on the part about the eagles.  Wouldn't it be great to fly like them?  But the part that caught her attention was the last stanza : they will walk and not be faint.  Even when the best that we can do is put one foot in front of the other and walk, the Lord will not allow us to fall.  We can lean on Him.  He will support us.  That is his promise.  So when I feel that I am about to falter, I look to Jesus for my strength and "just keep swimming, just keep swimming..."