[W]hat makes Christianity absolutely distinct is the identity of our God. Which God we worship: that is the article of faith that stands before all others. The bedrock of our faith is nothing less than God himself, and every aspect of the gospel—creation, revelation, salvation—is only Christian insofar as it is the creation, revelation and salvation of this God, the triune God.
Michael Reeves, Delighting in the Trinity: An Introduction to the Christian Faith, (IVP Academic, 2012), 15