The son of former NSW Labor minister Eddie Obeid has told the ICAC that a confidential mining map for a ministerial briefing "may have been drawn up by Jesus Christ".

Taking the witness stand for a second day this morning, Moses Obeid said he was at the family's Birkenhead Point office when it was raided by ICAC investigators in 2011.

Counsel-assisting Geoffrey Watson then questioned him about maps seized from the office of Paul Obeid, another of Eddie Obeid's five sons.

Mr Watson said the maps, showing potential mining areas at the Mount Penny tenement near an Obeid family property in the Bylong Valley, were confidential documents prepared for a ministerial briefing.

Moses Obeid said he could not recall how one map came to be in the office and denied getting it from former mining minister Ian Macdonald.

The map "may have been drawn by Jesus Christ", he told Mr Watson.

Under questioning from Mr Watson yesterday, Mr Obeid denied his family potentially stood to profit $100 million from mining tenders in the Bylong Valley, saying the figure was only $75 million.

But he admitted he received information from Mr Macdonald, saying he did not know at the time that the information was confidential and highly sensitive.

Members of the public lined up for two hours before the hearing this morning to get a space in the public gallery.

As Mr Watson walked down the corridor towards the hearing room, they clapped and cheered.

Eddie Obeid and Mr Macdonald are expected to front the hearing next week.

Before the hearing started this morning, Mr Watson clarified statements he made on Wednesday about Obeid family accountant Sid Sassine.

"I did not wish to suggest ... that Mr Sassine was misleading the commission as to his availability, or trying to delay the proceedings," he said.

"What's more, it's accepted he has a real purpose in this overseas trip.

"I was not intending to suggest Mr Sassine had done anything wrong, rather I was trying to tell people there would be this [delay]."

Sorry, this video has expired Court reporter Jamelle Wells discusses the day's ICAC testimony