Do not rejoice when your enemy falls, and do not let your heart be glad when he stumbles;
lest the Lord see it, and it displease Him, and He turn away His wrath from him.
Do not fret because of evildoers, nor be envious of the wicked; for there will be no prospect for the evil man;
the lamp of the wicked will be put out.
Proverbs 24:17-20
(NKJV)