Isaiah 40:28-31 NLT is one of my favourite passages on Scripture. It says…
 Have you never heard? Have you never understood? The LORD is the everlasting God, the Creator of all the earth. He never grows weak or weary. No one can measure the depths of his understanding.  He gives power to the weak and strength to the powerless.  Even youths will become weak and tired, and young men will fall in exhaustion.  But those who trust in the LORD will find new strength. They will soar high on wings like eagles. They will run and not grow weary. They will walk and not faint.
There are four things I love about this passage. Four simple, but profound thoughts.
1. God is the all wise, all powerful, eternal Creator, whom no-one can fully understand.
2. He never grows tired and weary like human beings do.
3. He gives power and strength to the weary and weak from His unlimited resources.
4. He promises to help us soar like eagles and not grow weary.
Understanding that our all powerful Creator empowers us is a key to being effective in this life of following Christ. His power enables us to do all He created us to do.