The newly re-created Sanhedrin in Israel is planning a ceremony to consecrate a stone altar prepared for use in the Third Temple, and it has released a declaration intended to be an invitation for other nations to participate in the Temple “and to receive its blessings.”
According to Adam Eliyahu Berkowitz’ report in Breaking Israel News the altar has been prepared with stones made of aerated concrete and “fit for use in the Temple.”
The current stones are in loose form ready to be moved to the Temple Mount and stored so they would be available “at a moment’s notice,” but there also are plans to re-create the pieces from actual stones, considered the “ideal material from which to build the altar.”
The Sanhedrin is the re-creation of the ancient legal council that advised in Israel during biblical times. It earlier invited Arab nations to prepare for their role in the construction of a Third Temple.