Divine healing will always come by divine intervention; regardless of monetary seed you sow or that you don’t…
“But Peter said, “I do not possess silver and gold, but what I do have I give to you: In the name of Jesus Christ the Nazarene-walk!” And seizing him by the right hand, he raised him up; and immediately his feet and his ankles were strengthened.
With a leap he stood upright and began to walk; and he entered the temple with them, walking and leaping and praising God.
And all the people saw him walking and praising God; and they were taking note of him as being the one who used to sit at the Beautiful Gate of the temple to beg alms, and they were filled with wonder and amazement at what had happened to him.
Acts 3:6-10 NASB