Isaiah 40:28-31
28 Do you not know?
Have you not heard?
The LORD is the everlasting God,
the Creator of the ends of the earth.
He will not grow tired or weary,
and his understanding no one can fathom.
29 He gives strength to the weary
and increases the power of the weak.
30 Even youths grow tired and weary,
and young men stumble and fall;
31 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.

Are you feeling a little weary? It's Friday and that helps a lot of people get through the day, but here is better help. God gives strength to the weary. In the New Testament it says, "in our weakness he is strong". So take comfort in the Lord. He gives us strength when we need it most. He never grows weary, and he never runs out of strength.