'Plague' in the Bible

" 'And if you go against me [in] hostility and you are not willing to listen to me, then I will add a plague onto you seven times according to your sins.

And I will bring upon you a sword that seeks vengeance [for the] covenant, and you shall be gathered to your cities; and I will send a plague in your midst, and you shall be given into [the] hand of an enemy.