One thing I know

John 9:24-25
So they again called the man who was blind, and said to him, “Give God the glory!  We know that this Man is a sinner.”

He answered and said, “Whether He is a sinner or not I do not know. One thing I know: that though I was blind, now I see.”

A mature faith must stand on its own.  We may or may not be healed of an infirmity.  Our circumstances  may at times be very difficult.  Even so, and especially so, we are to echo the words of the hymn writer:

I am not skilled to understand
What God hath willed, what God hath planned
I only know at His right hand
Is One who is my savior.