Will he comeback alive?
He is a pro-israel, why wouldn't he comeback alive? If the elite wanted him dead (assuming that you are speaking about them in the first place), he would've died by now (even before the inauguration). Besides, wouldn't killing him in Israel make things more obvious to the public?
He is probably hinting at the possibility that Donald Trump may be assassinated by either the Hamas or the ISIS, while he is visiting Israel (the chances of which are pretty remote). The Jews are definitely not going to harm him, because he is the most pro-Israeli president the United States ever had for the past many decades.