[This is from Clark’s notes in his personal copy of one of Van Til’s syllabi. Clark signed his name in the book and notes “Gift of Van Til, 4/-/40.”]
Van Til, Christian Apologetics, p. 14: “Using the language of the One and Many question, we contend that in God the one and the many are equally ultimate. Unity in God is not more fundamental than diversity and diversity in God is no more fundamental than unity. The persons of the Trinity are mutually exhaustive of one another. The Son and the Spirit are ontologically on par with the Father.”
Note that the ontological equality of the Son with the Father is used as an argument to show that the One and the Many are equally ultimate in God. This would be a good argument only if the Son represented the diversity in the Godhead and the Father was the unity. But as a matter of fact the Father represents a diversity as much as does the Son. The orthodox doctrine asserts that it is the substance that is the factor of unity in the Godhead. The Father is one of the three persons. In other words Van Til has confused the Father with the substance.