Wait on the LORD: be of good courage, and he shall strengthen thine heart: wait, I say, on the LORD.
Psalms 112:8His heart is established, he shall not be afraid, until he see his desire upon his enemies.
1 Thessalonians 3:13To the end he may stablish your hearts unblameable in holiness before God, even our Father, at the coming of our Lord Jesus Christ with all his saints.