Do not gloat when your enemies fall; when they stumble do not let your heart rejoice, or the Lord will see and disapprove and turn His wrath away from them. (Proverb 24:17-18)
Fret not thyself because of evil men, neither be thou envious at the wicked; For there shall be no reward to the evil man; the candle of the wicked shall be put out. My son fear thou the Lord…., For their calamity shall rise suddenly; and who knoweth the ruin of them both? (Proverb 24:19-22)
Perhaps most of us have encounter those we deem as enemies; however, we must pray for them because they too are influence by Satan. The devil is our number one enemy, and we must not allow him to lead us into the sin of hatred or rejoice in their downfall.