The two players arrived with the rest of their team in Israel, which is hosting the French Super Cup for the second time.
Yair Netanyahu, son of opposition leader Benjamin Netanyahu, allegedly sold items belonging to his father online
Messi did not say what his immediate plans were, but French newspaper L'Equipe reported on Friday that he was set to join Paris St Germain.
Messi, who joined Barca's youth set-up aged 13, is the club's all-time top scorer and appearance maker with 672 goals in 778 games in all competitions.
The Catalan club had an exciting day of sports activities with Israeli children on the autistic spectrum, where they practiced their soccer skills.
In addition to playing their match, the Spanish team also traveled to Israel for the worldwide opening of "Barça The Exhibition", which is set to also appear in other countries in the coming months.
A planned friendly match was canceled by Beitar Jerusalem after FC Barcelona demanded that the game take place outside Jerusalem.
Last year, Around 1,200 people joined Meretz MK Tamar Zandberg in demanding Defense Minister Benny Gantz designate Beitar's far-right fan club 'La Familia' as a terrorist organization.
"This is a huge win for us, you could say that it was as important as a final but we'll have to keep on fighting for a while yet," said Real defender Nacho.
The superstar has left a legacy in Israel, with two coexistence projects operating in Jaffa and Acre as part of the Cruyff Foundation.