What is the significance of Jesus saying, "Your faith has made you well"?

from the old testament

• "Your faith has made you well" is not found in the Old Testament.

from the new testament

• The four specific instances where Jesus used the phrase “your faith has made you well” each involve someone coming to Jesus in faith that He had the authority to heal them. The statement appears in Matthew 9:22, Mark 10:52, Luke 17:19, and Luke 18:42. Additionally, at other times when Jesus healed, He made similar statements, such as “According to your faith let it be done to you” (Matthew 9:29). Because of passages such as these, some have argued that they show that Jesus heals when one has enough faith. However, in making such an argument, they are missing the point of the passages.
• Key to understanding them is Jesus’ usage of the Greek word sozo. This word means “save” or “deliver.” For example, Paul uses the same word when he says, “If you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved” (Romans 10:9). So, it’s not a word that inherently or primarily means healing.
• However, contextually, it’s clear that Jesus heals those who come to Him. So in those cases, it’s valid to translate it as “heal,” as in “delivered from your infirmity.” But given Jesus’ word choice, one must not miss that His point was not that faith healed them, but that faith saved them. He healed them to demonstrate He had the authority to save (e.g., Mark 2:9–11), using a word that encompassed both the healing and saving.
• Note that not everyone who had faith was healed. While it’s unclear what Paul’s “thorn” was, he was clearly a man of great faith, yet God refused to remove his thorn “to keep me from becoming conceited (2 Corinthians 12:7). Similarly, when Lazarus was sick, his sisters had faith in Him, but he chose not to heal (John 11:1–4). James also says that suffering, which includes sickness, “produces steadfastness.”
• Jesus and later the apostles healed people (e.g., Acts 3:6–7), but those healings authenticated the messenger’s message of salvation. It was never promised to everyone who has faith. The point of these passages where Jesus healed, then, is not the healing but the Healer—the One who saves.

implications for today

We are all born spiritually sick. Indeed, more than sick, we are spiritually dead (Ephesians 2:1). Salvation is an act of God mercifully applying Jesus’ work to us, making us alive (Ephesians 2:4–5). There is nothing else that can save us (Acts 4:12), making it, by far, the greater miracle. For the examples in this article that use sozo, Jesus physically healed them as an external sign of His claim that He saved them.

Today, some claim that these statements of Jesus are promises of healing for those who have enough faith. Yet that confuses events from the first century with prescriptions for what will happen today. It also misses that Jesus healed to point to salvation through Him, the greater miracle. It also overlooks all the times in Scripture when faithful believers were not healed (2 Corinthians 12:7–9; 1 Timothy 5:23; 2 Timothy 4:20). In short, at best, it’s bad theology; at worst, it prioritizes outward signs over internal transformation.

Regardless of any infirmities you have today, your greater need is salvation. Jesus came so that after you die—and we will all die—you could be resurrected into a perfect body (1 Corinthians 15:42–44, 52–53) and live forever with Him (1 Thessalonians 4:17). We encourage you to have faith. Not faith in healing, but faith that Jesus died for your sin so that through faith in Him, you will be saved (Romans 3:22–26)!