From a letter from David Powlison to a 13 year old (C.J. Mahaney’s son):
Don’t ever forget: God is merciful to you.
Mercy is who he is. “The Lord, the Lord God, compassionate and gracious, slow to anger, and abounding in steadfast love and faithfulness” (Exodus 34:6).
Mercy is what he does. “If God is for us, who is against us? He who did not spare his own Son, but delivered him over for us all, how will he not also with him freely give us all things?” (Romans 8:31-32).
Mercy is what you need. “Lord, hear my voice. . . . If you, Lord, should mark iniquities, O Lord, who could stand? But there is forgiveness with you, that you may be feared” (Psalm 130:3-4).
God’s mercy is not a theory, a bunch of words, or stories from a long time ago. It is the reality upon which your life depends. Mercy is a reality that anchors you into the life and death of Jesus Christ. He has come for us. He has come for you. You need help from outside yourself. Ask for help.