God gives the increase, not you
When we pray for the sick and they are healed, it reveals the Father's heart and people are drawn to it. We can then lead them to the cross, repentance and discipleship or to reject it. Either way, they were marked by heaven and will never forget their encounter with the risen Messiah.
Paul said, "I planted, Apollos watered, but God gave the increase. So then neither he who plants is anything, nor he who waters, but God who gives the increase. Now he who plants and he who waters are one, and each one will receive his own reward according to his own labor."
1 Corinthians 3:6-9
The world is waiting for you and I to do the works of Jesus.
Then a great multitude followed Him, because they saw His signs which He performed on those who were diseased. John 6:2
And through the hands of the apostles many signs and wonders were done among the people. And believers were increasingly added to the Lord, multitudes of both men and women. Acts 5:12, 14