The official inauguration is scheduled for next month.

 Isaac was born 22 September 1960, is an Israeli politician, A lawyer by profession, he served as the Government Secretary between 1999 and 2001 and as a member of the Knesset from 2003 to 2018. He held several ministerial posts between 2005 and 2011, including Minister of Welfare and Social Services (2007–11).

Formerly the chairman of the Labor Party and the Zionist Union alliance between 2013 and 2017, serving as the party's candidate for Prime Minister during the 2015 elections, he served as the opposition leader from 2013 until 2018.

With the results of the vote among Knesset Members, President Reuven Rivlin on Wednesday, 2 June 2021, congratulated president-elect Isaac Herzog.

I send you my warmest greetings, Mr. President!” said the president. “I can tell you that the responsibility of the role that you are about to assume is unlike anything you have done until now. The Jewish and democratic system we established here, in the land of our ancestors, has a body and soul. If the Knesset is a place of argument, as we have certainly seen recently, Beit HaNasi is a place of discourse, partnership and statehood.” 

The president added, “Beit HaNasi is the ‘neshama yetera’, the additional soul of democracy. It is the home of the people, all the people of Israel. Its door is open and its ear is bended to all partners in building our home, their pains and their troubles, as well as to the fundamental issues of concern to Israeli society as a whole.”

 “The title of ‘first citizen’ and the task guarding the character of the State of Israel, particularly at this point in time, are heavy responsibilities. I have no doubt that you will bear them superbly. I am proud to pass on the baton to you in a month’s time.”