Any parent that has lost a child will tell you that there is no greater pain in this world. Whether it's before they're out of the womb or after you have spent five decades with them, losing your baby is never easy.

In an emotional interview with Oprah Winfrey, Joe Biden opens up about the last moments he had with his son, Beau Biden, before he passed away from brain cancer in May 2015.

The former vice president revealed that he was holding Beau's hand right before his 46-year-old son died.

"[Beau] looked at me and he said, "˜Dad, I'm not afraid. I'm okay,' " recalled the former vice president.

He continued, "It was at the very end. His brother [Hunter] was sitting there, the three of us were holding hands and [Beau] wanted to reassure us [that he was okay]."

Joe revealed that wasn't the only time the former Delaware attorney general was trying to reassure him that things would be alright.

"I'd see him and he'd say, "˜Dad, look at me. Stop looking sad...no matter what happens, I'm gonna be alright, Dad. You've got to look happy. You've got to look strong for the family,'" he recalled.

But that didn't make the pain any less.

The former vice president knows the pain of loss far too well.

In December 1972, after Joe became the Senator-elect, his wife Neilia and 13-month-old daughter, Naomi, were killed in a car accident. His two sons, Beau and Hunter were badly hurt, but recovered from their injuries.

Joe revealed that even though it's been over two years since his son's passing, he is still reminded every day of his boy.

"What I do is I look at my grandson "” his son "” and I see him. I look at my granddaughter, I see her. And I know [Beau]'s still here. He's still with me."

Joe spoke to Oprah about his new book, Promise Me, Dad: A Year of Hope, Hardship, and Purpose in what was an incredibly emotional interview.

Watch the entire interview here:

When asked about his future in politics and whether he has made a decision about running the 2020 presidential race, he was still unsure.

"I'm, as I said, a great respecter of fate," he added. "I'm over 70, I'm "• thank God "• right now in awful good health. But I don't know ... what things are going to be two years from now. So I just don't know. I promise you: I'm not doing anything to organize running, but I'm going to go out there and continue to do what I've done since I've been 26 years old: holler."

Source: People