11. Since rebellion against God was at the root of this act of murder, let us all fear such rebellion in our own hearts, and turn from it, and embrace the grace of God in Christ, and renounce the very impulses that caused this tragedy.

12. Point the living to the momentous issues of sin and repentance in our own hearts and the urgent need to get right with God through his merciful provision of forgiveness in Christ, so that a worse fate than death will not overtake us.

13. Remember that even those who trust in Christ may be cut down like these thousands who were in New York and Washington, but that does not mean they have been abandoned by God or not loved by God even in those agonizing hours of suffering. God's love conquers even through calamity.

14. Mingle heart-wrenching weeping with unbreakable confidence in the goodness and sovereignty of God who rules over and through the sin and the plans of rebellious people.

15. Trust God for his ability to do the humanly impossible, and bring you through this nightmare and, in some inscrutable way, bring good out of it.

16. Explain, when the time is right, and they have the wherewithal to think clearly that one of the mysteries of God's greatness is that he ordains that some things come to pass which he forbids and disapproves of.

17. Express your personal cherishing of the sovereignty of God as the ground of all your hope as you face the human impossibilities of life. The very fulfillment of the New Covenant promises of our salvation and preservation hang on God's sovereignty over rebellious human wills.

18. Count God your only lasting treasure, because he is the only sure and stable thing in the universe.

19. Remind everyone that to live is Christ and to die is gain.

20. Pray that God would incline their hearts to his word, open their eyes to his wonders, unite their hearts to fear him, and satisfy them with his love.

21. At the right time sound the trumpet that all this good news is meant by God to free us for radical, sacrificial service for the salvation of men and the glory of Christ. Help them see that one message of all this misery is to show us that life is short and fragile and followed by eternity, and small, man-centered ambitions are tragic.

© Desiring God. By John Piper. Website: www.desiringGod.org. Email: mail@desiringGod.org. Toll Free: 1.888.346.4700.