'Wrath' in the Bible

And my punishment will be effected on the nations with such burning wrath as they have not had word of.

I will undergo the wrath of the Lord, because of my sin against him; till he takes up my cause and does what is right for me: when he makes me come out into the light, I will see his righteousness;

Who is a God like you, offering forgiveness for evil-doing and overlooking the sins of the rest of his heritage? he does not keep his wrath for ever, because his delight is in mercy.