Warren watched the movie first to get some ideas before writing the song. The scene that stood out for her was a climactic moment toward the end when the preacher asks everybody to stand who had faith that John would get better.
"To see the community rally around him, that stayed with me," Warren recalled to The Hollowood Reporter
. "The next day, I sat at the piano and started singing that chorus." Through whatever you go through
I'm standin' with you
Here wherever you go to
I'll stand beside you
Warren added: "The chorus wrote itself. It made me cry. It's simple, but it resonates."