Edan Alexander, the last known living American hostage in Gaza, was released by Hamas and reunited with his family on Monday, ending an 18-month ordeal that began with the militant group’s October 7 attack.

Hamas on Monday released Israeli American Edan Alexander after more than 19 months in captivity in the Gaza Strip, a result of direct talks between U.S. and Hamas officials in recent days.

"We always believed that this moment will come, always," his father, Adi Alexander, told ABC News in an exclusive interview Tuesday from the hospital in Tel Aviv where their son is being treated.