And fixing his eyes on him, with John, Peter said, "Look at us." So he gave them his attention, expecting to receive something from them. Then Peter said, "Silver and gold I do not have, but what I do have I give you: In the name of Jesus Christ of Nazareth, rise up and walk."
Acts 3:4-6

We cannot offer healing, but we can offer spiritual wholeness.

The gospel of Jesus Christ is about forgiveness of sin. It is about salvation. It is a misreading of scripture to attach physical healing to that gospel, as though physical healing is also guaranteed. Passages like Isaiah 53, in which words about healing are used symbolically, refer to spiritual healing, not physical healing.

If the saving work of Christ guarantees physical healing alongside of spiritual salvation, then one of two things must be true. First, either Christians would be 100% physically healthy and never die, just as we are 100% forgiven and never condemned. Or second, since Christians do get sick and die physically, we have no assurance that our sins are forgiven either.

But what about Jesus’ healing ministry, and the healings recorded in the book of Acts through the ministry of the Apostles? Physical healings are due to the compassion of God, but that doesn’t mean that we can perform healings, or that all believers can expect to always be healed, much less claim such healings.

Can God still heal? Of course. And He does—sometimes. Sometimes God heals by miracle, and sometimes by medicine, but He does not always heal.

The good news is that He always saves those who confess their sins and cry out to God for forgiveness in Jesus Christ.

The gospel does not guarantee physical healing, but it does guarantee spiritual salvation and wholeness.