"It's been an emotional week," Beal said, according to The Athletic's Fred Katz. "Definitely been some tough 24, 48, 72 hours here, just kind of letting it all seep in and realizing that your brother is no longer here with you no more. He's off to something better."
Beal added: "It's a tough situation because John is my brother and our relationship goes far beyond basketball."
The Wizards dealt Wall to the Houston Rockets on Wednesday in a blockbuster trade that sent 2017 MVP Russell Westbrook the other way. Washington selected Wall with the first overall pick in 2010.
Beal joined the Wizards as the third overall pick in 2013. He said it will be difficult to move on without Wall but that he's excited to play with his new backcourt teammate.
"He's a true point and I'm a true two," Beal said. "I think that, in itself, makes us mesh ... everyone has in their mind that Russ is super aggressive but I love aggression."
The new-look Wizards start their 2020-21 season Dec. 23 versus the Philadelphia 76ers.