This wise saying speaks about two opposite characters – “evildoers” and “the righteous.” It also discusses what happens to them both.
At the beginning of the verse “evildoers are snared by their own sin.” While they do evil things to other people, this proverb reminds us that their hurtful ideas will come back on them – like Wile E. Coyote with Roadrunner!
No matter what he tried, Wile E. eventually ended up suffering from his own evil doings. It reminds us of that other Biblical wise saying that notes “we reap what we sow” (see Galatians 6:7).
But in the second part of the verse, the righteous “shout for joy and are glad.” It’s possible this joyous occasion could be the downfall of the evildoers, but I doubt it. I don’t remember Roadrunner doing much rejoicing – just “beep beep!”
Instead, I’ll suggest this joy and gladness isn’t because of what happens to others but because of what’s going on in their own hearts and lives. They’ve learned to live like the end of the Serenity Prayer says – “reasonably happy in this life and supremely happy with You forever in the next” (see https://helpingupmission.org/serenity-prayer).
Evildoers are out there, and they will do bad things to others. But his proverb reminds us that what they do will come back on them.
So the righteous can just go ahead and enjoy their lives. While not Heaven, it does sound like a pretty good way to live!