We need to be faithful in what is small, to be faithful in larger matters. We need to take joy in small things, to have joy in larger things. Let's just pause for a moment and each one of us examine our own hearts and ask ourselves. Jesus needed to teach His disciples about abiding joy because He knew they would look at their circumstances and become sorrowful. Yes, no one can take our joy away from us.
Weeping is for a season, laughter is for a season, but joy goes on and on.
Don't put your trust in temporary emotions like laughter. Laugh at appropriate times, weep at appropriate times, but put your trust in the Lord and His Word, and you will have abiding joy forever in your heart.