"You are not alone... Do not lose hope," the pope said as he visited Lesbos with Ecumenical Patriarch Bartholomew and Archbishop Ieronymos, the head of the Church of Greece, calling on the world to respond to the tragedy "in a way worthy of our common humanity".
The three religious leaders then signed a joint declaration that calls on the international community to "respond with courage in facing this massive humanitarian crisis and its underlying causes through diplomatic, political and charitable initiatives."
"We are also going to a cemetery, the sea. So many people never arrived," he said before his arrival today.
There were emotional scenes as the pope visited the migrant facility of Moria, greeting unaccompanied minors, women and small children who gave him over a dozen drawings.
Also Read
Other migrants detained at Moria, unable to reach the pope, shouted and whistled.
Some held handmade signs that read 'We want freedom', 'Let my people go' and 'Papa cherche a nous sauver' ('Pope, try to save us').
The pontiff's landmark visit comes amid controversy over a deal last month to end Europe's refugee crisis by sending all irregular migrants who land in Greece back to Turkey.