President Donald Trump repeatedly touted the “Abraham Accords” in his high-profile Middle East trip. That’s the name for a set of 2020 diplomatic agreements between Arab states and Israel. Trump, who spoke Monday, is hoping to expand that number. The term “Abrahamic” is filled with religious and cultural meaning. The biblical patriarch Abraham is revered as a foundational figure in three major religions whose adherents encompass more than half the world’s population — Christianity, Islam and Judaism. Anyone trying to build bridges between the faiths is liable to invoke Abraham. At the same time, Abraham’s legacy can be a source of division, because some faith groups portray themselves as his only true heirs.