'Do Good' in the Bible

"For my people are foolish, they don't know me. They are foolish children, and they have no understanding. They are skillful in doing evil, but to do good they have no knowledge."

They are like a palm tree, of turned work, and don't speak: they must be carried, because they can't go. Don't be afraid of them; for they can't do evil, neither is it in them to do good."

Can the Ethiopian change his skin, or the leopard his spots? then may you also do good, who are accustomed to do evil.