Former President Carter gave the commencement address at Liberty University on Saturday, where he cracked a lighthearted joke about the crowd size being larger than President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's last year.

"This is a wonderful crowd," Carter started. "Jerry told me it's even bigger, I hate to say this, than it was last year. I don't know if President Trump would admit that or not."

Trump gave his first commencement address as president at the Christian college last year, which university president Jerry Falwell Jr. described as the "best commencement speech" in the school's history.

According to Falwell Jr., there were more than 50,000 people in attendance for Trump's 2017 speech.

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Carter did not say the total number in attendance on Saturday but said there were more than 20,000 graduates alone, not including family and friends who attended the commencement.

Carter's joke comes after former White House press secretary Sean Spicer Sean Michael SpicerKellyanne Conway to leave White House at end of month Pro-Trump duo Diamond and Silk launch new program on Newsmax TV The Hill's 12:30 Report - Presented by Facebook - Supreme Court's unanimous decision on the Electoral College MORE famously claimed after Trump's inauguration that he had the "largest audience ever to witness an inauguration, period."

The joke appeared to be the only reference to Trump during his speech.

Carter's commencement focused on Christianity, human rights, equality and justice. He called on the graduating class to use their education to make a difference and to go out into the world and be truthful and kind.

"We decide whether we tell the truth or benefit from telling lies. We're the ones who decide, do I hate or am I filled with love? We're the ones who decide, do I only think about myself, or do I care for others? We ourselves make these decisions and no one else. There are no limits to our ambition," he said.

Carter, 93, is the third president who has hosted Liberty University's commencement speech.