Isaiah 40 - whole chapter,
but especially vs 31 and
focus on the word Hope in the Lord or Wait on the Lord
Also
Acts 1:4 - the word wait again.
In Hebrew and Greek the word translated wait (or hope) is an active word.
We should wait on God in 2 ways - as a good waiter tends to the diner in a restaurant and as an athlete on the starting block after "take your marks, get set"...
As we wait for God we should be waiting like that athlete waits for the starting gun or buzzer
THEN will we rise up on wings like eagles, then will we run and not grow weary.