You can spot them by their actions, for the fruits of their character will be obvious. You won’t find sweet grapes hanging on a thorn bush, and you’ll never pick good fruit from a tumbleweed.
So in this situation, you should just leave these men to themselves. For if this plan or undertaking originates with men, it will fade away and come to nothing.
“You must determine if a tree is good or rotten. You can recognize good trees by their delicious fruit. But if you find rotten fruit, you can be certain that the tree is rotten. The fruit defines the tree.