Washington (CNN) House Speaker Nancy Pelosi on Thursday responded to President Donald Trump's attacks on Democratic congresswoman Debbie Dingell and her late husband Rep. John Dingell.

Asked about the President's insinuation at a rally in Michigan last night that the late congressman is "looking up" from hell, Pelosi was somber, saying, "Let us pray for the President," and adding that Trump "clearly is insecure."

"Let us pray. Let us pray for the President. The President clearly is insecure when it comes to statespersons, whether it was John McCain — think of what he said about John McCain, and his supporters just overlooked that. John McCain, now John Dingell," Pelosi said, referring to the President's repeated attacks on the late Republican senator from Arizona who was often critical of Trump while serving in the Senate.

"What the President misunderstands is that cruelty is not wit," Pelosi said, "Just because he gets a laugh for saying the cruel things that he says, doesn't mean that he's funny."

"It's not funny at all," Pelosi added. "It's very sad."

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