(Believers of God) Is it a sin for someone to bring up another persons past mistake in an attempt to hurt them?

Is this considered bad or a sin if someone constantly brings you down and always brings up your past mistakes even though that is not you anymore and you are a completely different person knowing that you hate when they bring it up.

(Believers of God) Is it a sin for someone to bring up another persons past mistake in an attempt to hurt them?
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