Pro. 16: 2 All the ways of a man are clean in his own sight, But the LORD weighs the motives.
Just last night we were discussing whether a lost person can do good. I am inclined to say man is totally depraved, even good acts done are committed with selfish motive. This proverb warns that the motives behind the acts of man are not what they seem or appear.
There is none righteous; no, not one.
Read all of Pro. 16 here.