Ember Robbins, a mom of four boys, knows how crazy the days can be when you're looking after multiple kiddos. But in a now-viral Facebook post she shared on Jan. 28, Ember saw just how impactful a kind deed can be. It all started when she noticed the Amazon delivery man stopped to play basketball [1] with her son. In a heartfelt open letter, she described why the act was so meaningful.

"Dear Amazon Prime Guy,

You have NO IDEA what you just did when you took a minute to slam dunk and shoot a couple hoops with my son and his friends, just to return an hour later with a brand new basketball for him since it was worn out and going flat," she wrote. "What you don't know is that my son had a really hard day at school today. He's been dealing with a classmate being mean to him for a few days now, and you did what I tried to but couldn't. You turned his whole day around. Probably his whole week."

While Ember is thrilled that a kind stranger turned her son's day around, she instantly regretted not taking the time to get to know him. "I wish I would have asked your name, because the world should know what a good human you are and I would have loved to personally thank you," she wrote. In a sweet update Ember made the following day, she shared that she was, in fact, able to meet the nice stranger. "PSA," she wrote. "Amazon Prime Guy has been found [2], has messaged me and I have officially been able to say thank you."