Matthew Henry and continuators on Proverbs 20:6

6 Most men will proclaim every one his own goodness: but a faithful man who can find?

Note, 1. It is easy to find those that will pretend to be kind and liberal. Many a man will call himself a man of mercy, will boast what good he has done and what good he designs to do, or, at least, what an affection he has to well-doing. Most men will talk a great deal of their charity, generosity, hospitality, and piety, will sound a trumpet to themselves, as the Pharisees, and what little goodness they have will proclaim it and make a mighty matter of it. 2. But it is hard to find those that really are kind and liberal, that have done and will do more than either they speak of or care to hear spoken of, that will be true friends in a strait; such a one as one may trust to is like a black swan.