Joy is the victory shout of faith that will route the enemy arrayed against you.
C.S Lewis said, “Joy is the serious business of heaven”. This is a great truth every Christian must be aware of.
He who sits [enthroned] in the heavens laughs [at their rebellion]; The [Sovereign] Lord scoffs at them [and in supreme contempt He mocks them]. PSALM 2:4 AMP
God laughs at your [His] enemies because of their utter impotency to harm you or alter His decrees.
The Lord laughs at him [the wicked one–the one who oppresses the righteous], For He sees that his day [of defeat] is coming. PSALM 37:13 AMP
So, cast your cares on the Lord and join Him in “the serious business of heaven” and laugh the devil to scorn.