"I hope you know how grateful I am to all of you," Biden said.
Democrats kicked off their convention Monday with a who's who of guests who all touted Vice President Kamala Harris' run for the White House.
Several topics came up during the night including the future of reproductive rights and Project 2025.
Harris made a surprise appearance after several Democratic VIPS took the stage, including Rep. Alexandria Ocasio-Cortez.
The main stars of the night were some of the Democrats' longstanding figures including Secretary of State Hillary Clinton.
But the main spotlight came as President Joe Biden spoke to the cheering crowd, reflecting on his four years as president and his decision to "pass the torch" to Harris.
The president slammed his predecessor over his rhetoric on veterans and armed service members.
Biden, whose son Beau served in the military, chastised Trump over reports that he called fallen soldiers "suckers and losers."
"They're not the words of a person not worthy of being commander in chief. Period," he said.
The president turned his attention to the rising gun violence in the country citing stats that showed firearm deaths were the leading cause of deaths among children.
"More died from a bullet than cancer, accidents or anything else in the United States, in America. My God," he said.
Biden spoke about his and Harris' gun control polices and again pushed for a ban on assault rifles and universal background checks.
"If we care about public safety, we need to prevent gun violence," he said.
President Biden is continuing his criticism of his predecessor, accusing him of "lying" about the border.
"Here's what he won't tell you: Trump killed the strongest bipartisan border deal in the history of the United States," Biden said.
Biden went on to slam Trump for his rhetoric toward immigrants, saying Democrats "will not demonize immigrants, saying they're poisoning the blood of America."
He reiterated the party's support for legal immigration and protections for "Dreamers."
Biden had pointed words for Trump.
"Donald Trump calls America a failing nation. He says we're losing," Biden said. "He's the loser. He's dead wrong."
"America's winning, and the world's better off for it," Biden continued.
