And this was the fact.

Just in proportion to the failure of the members of the assembly to understand the doctrine was their need of external confirmation of their incomplete interpretation of it. And then to settle this question, the very asking of which proved their misunderstanding of the doctrine, there was uttered in this assembly, as is described in the Acts, that strange phrase, which was for the first time found necessary to give external confirmation to certain assertions, and which has been productive of so much evil.

That is, it was asserted that the correctness of what they had decided was guaranteed by the miraculous participation of the Holy Ghost, that is, of God, in their decision. But the assertion that the Holy Ghost, that is, God, spoke through the Apostles, in its turn wanted proof.