»God should be a maker and not a marker of identity. For Christians and Muslims alike, God is the source of worshippers’ deepest values. That’s why two communities can have a common God. And that’s why having a common God can be the foundation for unity rather than a cause of division.
… if communities have a common God and if their believes about God are similar, they will share values, aspirations, and motivations. More important, to the extend that they give ultimate allegiance to God, these shared values, aspirations, and motivations will trump values, aspirations, and motivations derived from their respective group identities.«
Miroslav Volf, Allah: A Christian Response, Page 190f.