The King James Bible addresses courage in several passages:
Joshua 1:9 (KJV)
9 Have not I commanded thee? Be strong and of a good courage; be not afraid, neither be thou dismayed: for the LORD thy God is with thee whithersoever thou goest.
Deuteronomy 31:6 (KJV)
6 Be strong and of a good courage, fear not, nor be afraid of them: for the LORD thy God, he it is that doth go with thee; he will not fail thee, nor forsake thee.
Psalms 27:1-14 (KJV)
1 The LORD is my light and my salvation; whom shall I fear? the LORD is the strength of my life; of whom shall I be afraid? 14 Wait on the LORD: be of good courage, and he shall strengthen thine heart: wait, I say, on the LORD.
1 Corinthians 16:13 (KJV)
13 Watch ye, stand fast in the faith, quit you like men, be strong.
Isaiah 41:10 (KJV)
10 Fear thou not; for I am with thee: be not dismayed; for I am thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness.