This was to fulfill what was spoken through the prophet Isaiah: “He took on our infirmities and carried our diseases.”
Textus Receptus (TR) - Matthew 8:17 >ὅπως πληρωθῇ τὸ ῥηθὲν διὰ Ἠσαΐου τοῦ προφήτου, λέγοντος, Αὐτὸς τὰς ἀσθενείας ἡμῶν ἔλαβε, καὶ τὰς νόσους ἐβάστασεν.