Not just Netanyahu. Mike Pence. Pence is an evangelical Christian. They believe in a Biblical prophecy that claims Jesus will return when the Temple Mount is fully restored to the Jews. I have unavoidable daily interactions with an evangelical, and while we rarely discuss politics or religion, was treated to a long explanation of why this person was voting for Trump (despite disliking everything else about the man) simply because of this one promise. This fellow does not think Trump believes in God, much less the “Second Coming” and the “Rapture”, but nonetheless insisted that God frequently uses nonbelievers to achieve a purpose - and so it was God’s will that he vote for Trump.
I queried as to what the hell the American embassy had to do with restoring the Temple, and the answer was vague and full of weird amendments to Biblical texts in an effort to make “moving the embassy” equate to “giving the Jews the entire Temple area back”. It didn’t matter to him, and it doesn’t matter to any of the evangelicals, that they have to twist the words of their most sacred book to back up this strange belief; they believe it fervently. They really and truly think that moving the embassy is a going to bring Jesus back. Pence believes this, as well, and I am sure any talk from Trump about the embassy, Jerusalem, the Jewish people, and God originate with him. Trump certainly doesn’t give a damn about any of this and has no belief system beyond getting your money into his pocket. He doesn’t object to tossing a few ripe tidbits to the religious right in the US in order to keep them in his tent, however. It’s only a plus that it makes Netanyahu happy, although naturally Netanyahu likes the idea for political reasons and doesn’t think for one hot minute that it’s going to usher in the Second Coming of the Christian messiah.
Whole thing is a game on both sides (Trump’s and Netanyahu’s), but it’s very real to the evangelical crowd in the US, who - like Mike Pence - utterly believe that moving an embassy staff from here to over there is just the ticket to convince Jesus to return on a cloud of glory. [Can I have an “amen”, brother?]