Jesus said, “My Father is greater than I” (John 14:28).
It would be a ridiculous thing for a mere human being to say this. This statement, therefore, seems to argue against a ‘mere man’ interpretation of Jesus.
But who was speaking?
The Arians of the fourth century believed that “the incarnate Word took to himself a body without a soul or mind” (RH, 110). In other words, they believe that it was “the incarnate Word” who said, “My Father is greater than I.” Consequently, the Arians believed that “the Gentiles and the peoples crucified the God of the four comers of the earth, and crucified him because he tolerated it” (RH, 109). [They did refer to the Son as “God.” They believed:
“The Son is 'God of everything that was made later than he … by the providence of his God and Father, but the Father is God for the Son, whose origin he is, as he is of all'.” (RH, 108)]
So, their position is clear:
“The Arians dislike dividing Christ's words and acts into those relevant to his human nature and those to his divine nature. It was the God in Christ who died; he was that sort of vulnerable God.” (RH, 103)
My question is, in the Trinity doctrine, who said, “My Father is greater than I?” I am not asking which person of the Trinity said those words; I am asking which nature of Christ was speaking (or both?).
RH = Bishop RPC Hanson - The Search for the Christian Doctrine of God – The Arian Controversy 318-381 (1981)