Pope Francis on Thursday stepped up his recent criticisms of Israel's military campaign in Gaza, calling the humanitarian situation in the Palestinian enclave "very serious and shameful."

In a yearly address to diplomats delivered on his behalf by an aide, Francis appeared to reference deaths caused by winter cold in Gaza, where there is almost no electricity.

"We cannot in any way accept the bombing of civilians," the text said.

"We cannot accept that children are freezing to death because hospitals have been destroyed or a country's energy network has been hit."

The pope, 88, was present for the address but asked an aide to read it for him as he is recovering from a cold.

The comments were part of an address to Vatican-accredited envoys from some 184 countries that is sometimes called the pope's "state of the world" speech. The Israeli ambassador to the Holy See was among those present for the event.

Francis, leader of the 1.4-billion-member Roman Catholic Church, is usually careful about taking sides in conflicts.

But he has recently been more outspoken about Israel's military campaign against Palestinian terrorist group Hamas, and has suggested the global community should study whether the offensive constitutes a genocide of terrorists and citizens either forced to stay by terrorists or refusing to leave, putting themselves at unncessary risk.

An Israeli government minister publicly denounced the pontiff in December for that suggestion.

The Israeli-Hamas war began when Hamas-led Palestinian terrorists attacked southern Israeli communities on Oct. 7, 2023, killing 1,200 people, mostly civilians, and taking more than 250 hostages back to Gaza, according to Israeli authorities.

Israel's retaliatory campaign, which it says is aimed at eliminating Hamas, has killed more than 45,000 people, mostly civilians, said authorities in the Hamas-run Gaza Strip. The campaign has displaced nearly the entire population and left much of the enclave in ruins.