"Today we thank God because there is finally a truce between Israel and Palestine and some hostages have been freed," the pope said in a statement.
"We pray that they all may be [freed] as rapidly as possible and that more humanitarian aid arrives in Gaza and that they insist on dialogue," the 86-year-old added.
A colleague read the statement as the pope recited Sunday's Angelus prayer from his residence rather than the balcony overlooking St Peter's Square due to health issues. The pope himself described it as an "inflammation in the lungs" after his aides said he was suffering from a mild flu.
Under the four-day pause in fighting, brokered by Qatar, Egypt and the United States, Hamas has agreed to free 50 hostages in exchange for the release by Israel of 150 Palestinian prisoners.