Not for that we have dominion over your faith, but are helpers of your joy: for by faith ye stand - 2 Cor. 1:24
I came across this verse yesterday and instead of steamrolling over the last verse in a chapter like I do a little too often, I actually had to sit and think about this one.
We're called to be helpers of other people's joy. Earlier in the passage, in verse 14, Paul says that the Corinthians are his and his friends' rejoicing, even as he and his friends are the Corinthians' rejoicing. We're here to bring joy to others.
Probably a good idea to keep that in mind when we're tempted to complain about someone. Or when we are about to sin, or about to sit alone and sulk.
Donna