He made his debut for Namibia as a 17-year-old, was the country's cricketer of the year in 2012 and had played 92 first class games including a top score of 157 against Bermuda five years ago.
"He was taken far too early from us. We, however, accept that Almighty God needed him to represent the heavenly angels! May his soul rest in peace," Cricket Namibia president Richard Frankie said.
South African cricket and the ICC expressed their sadness about van Schoor's sudden death.
"It is a terrible tragedy for anybody to die at such a young age," CSA chief executive Haroon Lorgat said.
"Although he was so young he had already represented Namibia for eight years and was one of the batting stalwarts of their side. He made more than 4000 first-class runs, took 28 wickets and was a competent wicketkeeper as well."
Raymond was a regular member of the Namibia cricket team, a promising young player with the potential to go a long way, ICC CEO David Richardson said.
"On behalf of the ICC, I express my sincere sorrow and condolences to Raymond's family and friends, as well as all those involved in Namibia cricket."
Namibia captain Stephan Baard said their teammate had always been a great competitor.
"Ray, you were always known as a fighter and someone that never stood back from a challenge, and you were fighting right up until the final moments. We never understand these things, but we have to know that god has a plan for all of us, even though we do not always agree.
"A role model, leader, great laugh in the change room and just an amazing guy to be a part of your life. We will meet again someday and laugh at all those great moments on and off the field. But until then, rest softly buddy."
