Further, he said, the Constitution would not "permit using the laws of perjury, which are very tough". A majority of Justices have been Protestant; the court had its first Catholic majority in 2006, and this will continue with the addition of Justice Kavanaugh.
Kavanaugh joins the Supreme Court today after he was sworn in at a private ceremony on Saturday and a public ceremony on Monday, report the Wall Street Journal and the Washington Post in stories here and here.
Chief Justice John Roberts opened the hearing saying it was a "great pleasure" to welcome Kavanaugh. They also chatted privately before the arguments began.
Kavanaugh was Trump's second selection for the nation's highest judicial body, following conservative Justice Neil Gorsuch a year ago.
The cases before the justices on Tuesday were not blockbusters.
Tuesday's cases involved the 1984 Armed Career Criminal Act, a "three-strikes-and-you're-out" criminal sentencing law that boosts prison sentences for people who are convicted of crimes involving guns if they previously have been convicted of certain other crimes.
"The Supreme Court is a team of nine".
114 Justices (including Brett Kavanaugh) have been appointed to the Bench since the Supreme Court was established in 1789.
Kavanaugh and his team are settling into the former chambers of Justice Samuel Alito, who moved to the offices vacated by retired Justice Anthony Kennedy.
CNN legal analyst Joan Biskupic said Brett Kavanaugh would be "changing the law of the land" for the next 20 years as the newest Associate Justice of the Supreme Court.
DC Circuit receives complaints about Kavanaugh, ...
When the session came to an end, Kavanaugh shook hands with his new seatmate, Justice Elena Kagan.
As the newest member of the court, Kavanaugh will take on a few special jobs.
The final vote for Kavanaugh stood at 50-48 which proved to be an advantage for Trump in view of the upcoming mid-term elections which is a month due.
After an extra Federal Bureau of Investigation probe - which media reports say was drastically curtailed by the White House - also found nothing new, Kavanaugh was finally voted into the coveted post.
Kavanaugh is expected to push the court further to the right as he is replacing Kennedy, a conservative who sometimes voted with the liberal justices on key social issues such as abortion and gay rights.
The nation's reckoning with power and who to believe about sexual misconduct has generated a new anger factor among the electorate and made the November 6 balloting a referendum on more than President Donald Trump.
"Those who step forward to serve our country deserve a fair and dignified evaluation, not a campaign of political and personal destruction based on lies and deception", he added.
Kavanaugh's critics, unhappy with the Senate process, Kavanaugh's record and the way sexual assault allegations were handled, still plan to continue their protests against him.
Later, in Orlando, he called Kavanaugh "a flawless person".