'Do Good' in the Bible

For my people are foolish, they have not known me; they are sottish children, and they have no understanding: they are wise to do evil, but to do good they have no knowledge.

They are upright as the palm tree, but speak not: they must needs be borne, because they cannot go. Be not afraid of them; for they cannot do evil, neither also is it in them to do good.

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