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It’s a story that will warm your heart.

A cellphone video caught a touching act of generosity and faithlessness that has now been seen and shared on social media millions of times.

In it, Joey Resto is seen taking the shirt off his back and giving it to a shirtless, shivering man riding on New York City's subway train Friday night. He also takes off his hat and covers the man’s head, a move that has earned him praise but he downplays with humility.

“It was a natural reaction to help, to do what I can,” Resto told the New York Daily News on Monday. “I hope they find the guy. It’s not hard to spot him.”

The 23-year-old paralegal said all other passengers on the train sat far away from the unnamed homeless man because of the odor. However, Resto sat in front of him and actually took a Snapshot video of the man.

But he said his heart broke and he felt the need to do something more. So he pulled off his white cotton T-shirt and offered it to the man, who was only wearing blue jeans and sneakers.

“It was freezing that night. He looked cold and hungry,” Resto told Eyewitness News. “He looked so weak and frail. I had to help him, or he would not put it on.”

He told the Daily News: “He didn’t really say yea, he just kind of lifted his arms like a child.”

Resto, who lives in Brooklyn, said he tried to get the man to accompany him for a hot meal, coffee or more clothes, but ultimately stayed on the train when he got off.

“He was warm for the first time in I don’t know how long,” he said. “He just curled up in a corner and went to sleep.”

What the subway Samaritan didn’t know was that another passenger caught the whole thing on tape and posted it on Facebook. It was has been viewed more than 13 million times since it was posted on Friday night.

Lazaro Nolasco, who took the video, told the Daily News: “The guy did a good deed. I would tell him, ‘God bless him.’ That was thoughtful.”

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