Child is playing in a parking lot. Suddenly, he begins to repeat 'Help, locked, locked, locked'

A mother, who just days before had shown to her son about hot-car safety, couldn't have imagined that the boy was going to save someone's life.

But that was exactly the case with this Tennessee toddler, who, according to Inspire, has been branded a hero after he saved an old man trapped inside a car.

It was 91 degrees Fahrenheit outside when Bob King found himself trapped in his car after the doors automatically locked.

On July 2014, the 68-year-old was waiting for his wife to come back from an event at the Vestal Baptist Church in Knoxville, Tennessee.

According to NY Daily News, 3-year-old Keith Williams was playing in Vestal Baptist Church's parking lot on when he spotted the senior struggling to exit the vehicle.

King, who suffered from two strokes in the past months and underwent numerous treatments for cancer, was feeling weak and couldn’t open the car door.

“We’ve been having trouble with the door on this car since we bought it,” King explained to ABC News.

He then called the child over to help set him free, but when the child realized he was unable to open the heavy door himself, he ran to get help from Pastor Jack Greene, who was nearby volunteering at an event.

“I hollered at him and he just looked at me kind of funny and I said ‘Get help, get help,’” King recalled.

Although it took Greene a few attempts to open that door, when it finally opened, King fell out from his car seat and almost hit his head on the ground.

Greene also asked King if he needed medical help and then took him inside the air-conditioned church while giving him water. He also fanned him until he became better.

When Keith’s mother, Jessie, heard of what her son had done, she was very proud, as a few days before this incident, she had educated him about hot-car safety.

King said he would have had waited for another 20 minutes before his wife came back, claiming that he is thankful that the boy came to his rescue.