At least 25 Palestinians were killed due to Israeli attacks in Gaza in the last 24 hours, including 16 bodies that were recovered from under the rubble, the Hamas-run Gaza Health Ministry reported Wednesday.

"A number of victims remain trapped under the rubble and on the roads, as ambulance and civil defense teams are still unable to reach them," the ministry said.

At least 67,938 Palestinians have been killed in Gaza since the beginning of the war, the ministry said.

-ABC News' Samy Zyara

Israel says that one of the four bodies handed over by Hamas "does not match any of the hostages," according to a statement from the IDF.

"Following the completion of examinations at the National Institute of Forensic Medicine, the fourth body handed over to Israel by Hamas does not match any of the hostages," the IDF said. "Hamas is required to make all necessary efforts to return the deceased hostages.”

The Rafah border crossing between Egypt and Gaza remained closed on Wednesday, Israel said, as the delicate ceasefire between Israel and Hamas continued to take hold.

"The defense establishment clarifies that, contrary to reports, the Rafah Crossing did not open today," an Israeli security official told ABC News. "Preparations are ongoing for its opening for the exit and entry of Gazans only."

Aid for Palestinians in the enclave is traveling through other crossings, including the Kerem Shalom crossing, the official said. Israeli security forces are inspecting aid before it enters the strip, the official said.

International aid groups, including the U.N.'s agency for Palestinian refugees, have urged Israel to let more aid into Gaza.

"We have enough food for the entire population for 3 months waiting in Egypt and Jordan," UNWRA said in a statement on Tuesday. "There’s no more time to lose -- we need a green light to start bringing in UNRWA’s supplies immediately so our teams can deliver them to people in need."

-ABC News' Jordana Miller and Kevin Shalvey

The United Nations' World Food Programme said it is "scaling up its operations in Gaza" as the ceasefire has gone into effect.

Since Saturday, 137 trucks with food aid have gone into Gaza "to support bakeries, nutrition programmes and general food distributions," the organization said in a release Tuesday.

"With full access, WFP intends to restore its regular food distribution system, scaling assistance through 145 distribution points across the Strip," the organization said.

-ABC News' Ellie Kaufman

Israeli Prime Minister Benjamin Netanyahu praised and thanked President Donald Trump in his address to the Knesset, the Israeli parliament, on Monday.

"At the beginning of the war, I promised to bring all the hostages home. Today, with the indispensable help, the determined and focus help, the unremitting help of President Trump ... and with the incredible sacrifice and courage of the soldiers of Israel, we are fulfilling that promise," Netanyahu said, with Trump looking on.

"Two weeks ago, you succeeded in doing something miraculous, you succeeded in doing something that no one believed was possible: you brought most of the Arab world -- you brought most of the world -- behind your proposal to free the hostages and end the war," he said to Trump.

"I've seen a lot of American presidents ... I’ve never seen anyone move the world so quickly, so decisively, so resolutely as our friend President Donald J. Trump," he said.