Abba, Father

Key verse
Psalm 59:16 -  But I will sing of your strength, in the morning I will sing of your love; for you are my fortress, my refuge in times of trouble.

Romans
Romans 8:15 - For you did not receive a spirit that makes you a slave again to fear, but you received the Spirit of sonship. And by him we cry, "Abba, Father."
This verse brings me joy because it is liberating!  We don't have to be afraid of sin and death.  Granted, that doesn't mean that sometimes I won't be afraid, but the promise this verse brings is amazing - through the Spirit of God, living in me, I can call on God and not worry or fear.