According to the highly placed advisors, it is difficult to recover the bodies from the land strip as it has been "pulverized", which means that special equipment is needed to recover the remains.
We continue to hear from them that they intend to honor the agreement. They want to see the agreement fulfilled in that respect, says one of the advisors, who wants to remain anonymous.
The advisor says that there was great disappointment and anger when only four bodies were returned initially.
But they handed over bodies the following day and also the day after that.
US President Donald Trump has previously said himself that Hamas is "digging" for bodies.
Despite Israel's threats, on Thursday, however, there are signs that the country is continuing to follow the agreement. During the day, a further 30 dead Palestinians have been handed over to Gaza as a result of two deceased Israeli hostages being returned to Israel late on Wednesday.
The number follows the agreement, according to which 15 deceased Palestinians will be handed over for each deceased Israeli hostage handed over.
The US and other mediators are looking at introducing a system that rewards people who contribute to finding the remains of the hostages. Turkey is exploring the possibilities of sending experts to Gaza to recover bodies.