He took our infirmities
Matthew says that Jesus' healing of the sick fulfilled Isaiah's words about the Servant who took on infirmities and carried sorrows.
Surely He took on our infirmities and carried our sorrows; yet we considered Him stricken by God, struck down and afflicted.
Isaiah 53:4 says that the Servant took on infirmities and carried sorrows; after Jesus healed Peter's mother-in-law and many others, Matthew 8:17 quotes Isaiah and says that this was to fulfill what the prophet had spoken.