Isaiah 40:30-31

30Even youths shall faint and be weary,
and young men shall fall exhausted;
31but athey who wait for the Lord shall renew their strength;
they shall mount up with wings blike eagles;
they shall run and not be weary;
they shall walk and not faint.

Philippians 1:14

14And most of the brothers, having become confident in the Lord by my imprisonment, are much more bold cto speak the word
Some manuscripts add of God
without fear.

Copyright information for ESV