In 1 Peter 2:24, Peter makes an interesting statement about Christ: “He himself bore our sins on his body on the tree, that we might die to sin and live to righteousness. By his wounds you have been healed.”
Notice the tense of that last sentence: Jesus already has healed us. It’s done. We have been healed. We’re not going to be healed. That’s because the work of the cross was finished as soon as Christ said it was. Real faith, biblical faith, believes that Jesus has already provided everything that we need.