habrán endurecido
-they/you will have hardened
Future perfectellos/ellas/ustedesconjugation ofendurecer.

endurecer

Sus corazones se habran endurecido tanto en contra de El que habran perdido su habilidad de cambiar de manera de pensar.
Their hearts will have become so hardened against Him that they will have lost the ability to change their minds.
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