so that what was spoken through the prophet Isaiah might be fulfilled: He himself took our weaknesses and carried our diseases.
Matthew 8:17 (CSB)
Hundreds of years before Jesus was born, the prophet Isaiah wrote about a Servant of God who would carry our sicknesses (Isaiah 53:4). Matthew says that when Jesus healed the sick in Capernaum, He was doing what Isaiah said the Servant would do.
In the very next verse, Isaiah says this same Servant would be wounded for our sins. So the One who healed the sick is the One who would die on the cross to take the punishment for our sins. His healings pointed ahead to the day He will remove sickness and death completely.
God does not promise to heal every sickness right now if we ask the right way. Christians still get sick and still die. Christians call what is coming glorification. When Jesus returns, God will raise His people’s bodies and make them new, never to get sick or die, and free from sin for good. If someone we love is not healed now, it does not mean they or we did not have enough faith.
So we can pray boldly for the sick, because Jesus has the power to heal, and we ought to rest in His promise for the end: “He will wipe away every tear from their eyes. Death will be no more; grief, crying, and pain will be no more” (Revelation 21:4). Everyone who trusts Jesus will share in that day, because He died for our sins and rose again.