"When he [Jesus] had thus spoken, he spat on the ground and made clay of the spittle and he anointed the eyes of the blind man with the clay and said unto him, Go, wash in the pool of Siloam, (which is by interpretation, Sent.) He went his way therefore and washed and came seeing."
John 9:6,7
We may wonder what we should do to act on our faith, but we can't do something just because it worked for someone else.
We need to let God show us how to act in faith.
Jesus spit in the dirt, made clay of the spittle, put it on a blind man's eyes and told him to go wash in the pool of Siloam (John 9:6,7).
But He didn't tell anyone else to go dip in that pool.
Jesus gave people a whole variety of instructions for acting on their faith.
What worked for someone to receive their healing, could kill someone else if they do it to just make something happen.
We are to act because we believe.