GEOFF BENNETT: Elsewhere, Israeli airstrikes continued to pound Gaza today, as their invasion force sits ready by the Gaza border.

On the Egyptian side of that border, aid shipments still await entry to Gaza, as the U.N. secretary-general visited the site and pushed for a resolution.

Leila Molana-Allen reports.

LEILA MOLANA-ALLEN: This was a sanctuary for hundreds of Palestinian Christians and Muslims.

But, for many, it became a tomb.

The historic Greek Orthodox Church of Saint Porphyrius in Gaza was hit by Israeli airstrikes overnight.

The Israel Defense Forces said the target was a nearby Hamas command center.

But more than a dozen people who were taking shelter in the church compound were also killed, including the youngest.

RAMI, Christian Palestinian (through translator): This church is almost 1,700 years old and is one of the oldest churches in the world.

We have witnessed more than four wars.

And this is different.

It's a total genocide.

LEILA MOLANA-ALLEN: Another house of worship in ruins.

But that didn't stop the call to Friday prayer at this Gaza mosque.

And it doesn't stop Ibrahim Alagha from opening his heart and his home to dozens of refugees in Southern Gaza.

IBRAHIM ALAGHA, Sheltering Gazans: When an explosion happens, they're always screaming.

They're always frightened.

The younger ones, we try to calm them down, but the problem is the ones that are age 8 and above, those are the ones that understand what's going on.

They can hear and feel.

LEILA MOLANA-ALLEN: At the Al Shifa Hospital, the cries of the young echo everywhere.

Gaza's biggest and only well-equipped hospital is overwhelmed and running out of fuel and water, outside, despair.

JOUMANA KHREIS, Victim of Airstrikes (through translator): We don't want to receive aid.

We want the destruction and the killing of children in their sleep to stop.

We are tired.

LEILA MOLANA-ALLEN: Aid remains absent.

All eyes are on the one access point not under Israel's control, the southern Rafah Border Crossing.

Satellite images showed a bottleneck of some 200 vehicles stalled at the gates waiting to roll in.

ANTONIO GUTERRES, United Nations Secretary-General: These trucks are not just trucks.

They are a lifeline.

LEILA MOLANA-ALLEN: Today, U.N. Secretary-General Antonio Guterres visited.

ANTONIO GUTERRES: What we need is to make the move, to make the move to the other side of this wall.

LEILA MOLANA-ALLEN: Speaking with E.U.

leaders today, President Biden said a delivery deal had been finalized.

JOE BIDEN, President of the United States: I believe that, within the next 24 to 48 hours, the first 20 trucks will come across with aid.

LEILA MOLANA-ALLEN: Threats of a greater conflict in the Middle East emerge.

Surveillance footage from the Israeli military today showed strikes on Hezbollah targets along the Israel-Lebanon border.

And defense forces bolstered their presence in Jerusalem, as tanks remained parked all along the border regions.

A full-scale ground invasion of Gaza appears closer by the day.

YOAV GALLANT, Israeli Defense Minister (through translator): First, we will destroy the Hamas organization.

The next stage will take more time, which will be stabilizing the system.

And eventually, at some point, we will reach the point that there is a completely different security regime here.

LEILA MOLANA-ALLEN: And in the West Bank, Israeli security divisions are out in force.

Yesterday, the IDF conducted an extensive raid on Nur Shams in the northern West Bank, including a rare airstrike, as part of a larger anti-terror operation this week, today in Nur Shams, the devastation left behind, roads entering the camp ripped to pieces by bulldozers and somber crowds flocking to the cemetery to bury the dead.

Residents of Nur Shams camp have turned out to bury a dozen young men killed in an Israeli raid last night.

And Palestinian militants have turned out too, firing their guns and waving the flags of Hamas, Fatah and Islamic Jihad.

The IDF says the young men killed yesterday were terrorists.

Taha Mahamid's family says he was an innocent child.

Taha had just turned 15.

Last night, he was hiding with his brothers and sisters in their home as the Israel Defense Forces stormed through the camp.

Quiet returned, and Taha went outside to check if they could come out.

Video shows Taha was visibly unarmed and did not approach the soldiers.

The IDF shot him three times.

As his sisters watched from the window, Taha dropped to the ground.

FATMEH MAHAMID, Brother Killed By Israeli Defense Forces: He saw his kid lying on the street.

My father raised his hands.

And he wanted to pull his kid and to bring him here.

But he -- when he saw my brother, he knew that he was dead.

He gave him a hug.

LEILA MOLANA-ALLEN: As he tried to retrieve Taha's body, the soldiers shot Ibrahim too.

FATMEH MAHAMID: For two hours bleeding, and never let the ambulance come and give my father the help.

LEILA MOLANA-ALLEN: Ibrahim was not there to bury his son today.

He's now in intensive care.

Fatmeh's hands shake as she speaks, her grief still raw.

FATMEH MAHAMID: A 15-year-old is a terrorist?

Can you believe that?

And it is a shame to say such words.

I believe that, if you're fighting a military, you can do - - in war, you can anything you want to.

But you're not fighting soldiers, a military - - now you're fighting kids, civilians.

LEILA MOLANA-ALLEN: Hospital officials say five of those killed here last night were younger than 17.

One boy was just 12.

The IDF refused our request for an interview about the operation on Nur Shams; 83 Palestinians have been killed by Israeli security forces in the West Bank since Hamas' terror attacks and more than 800 arrested.

As the violence spreads, Palestinians in the West Bank are divided on how to respond to Israel's assault on Gaza.

Some are determined to protest and fight.

Others stay quiet, hoping to protect their families and safely ride out the tidal wave of Israel's vengeance.

But for people living in towns deemed a threat and targeted, that choice is already out of their hands.

For the "PBS NewsHour," I'm Leila Molana-Allen in Tulkarm, the West Bank.