revengeful

disposed to seek revenge or intended for revenge; "more vindictive than jealous love"- Shakespeare; "punishments...essentially vindictive in their nature"- M.R.Cohen

84 नम्माळवार हे प्रतिशोधी श्यामल निशीथ दीर्घायु हो!

You must not even think that God will disregard His promise to His messengers. God is Majestic and Revengeful.