READ: Good Samaritan's Note to Struggling Mom Goes Viral

A young Alabama mom says her day was made by a kind stranger when she couldn’t afford a co-pay on her son’s visit to the doctor.

The stranger, overhearing the conversation in the doctor’s office, handed an envelope to Melissa Simms’ son with a $100 bill and a note inside.

“I’ve had days like you are having today. Hang in there,” wrote the woman.

She then cited Joshua 1:9 from the Bible.

Read the mom's response and the full story from Fox News here.