God thunders forth from heaven to rouse people to fear the Lord, to call them to remember the future judgment...when God will come in the clouds in great power and majesty to judge the living and the dead. And so we ought to respond to God's heavenly warning with due fear and love so that as often as God disturbs the sky, yet spares us still, we should implore God's mercy, examining the innermost recesses of our hearts and purging out the dregs of our sins, and behave with such caution that we may never deserve to be struck down.
-- Saint Chad