McCall is associate professor of biblical and systematic theology and director of the Carl F.H. Henry Center for Theological Understanding, Trinity Evangelical Divinity School. He has authored Which Trinity? Whose Monotheism? Philosophical and Systematic Theologians on the Metaphysics of Trinitarian Theology (Eerdmans, 2010) and Forsaken: The Trinity and the Cross, and Why It Matters (InterVarsity, 2012).