This essay argues that Jesus’s confession of ignorance about the day and hour his return (Matt. 24:36; Mark 13:32) is logically inconsistent with Nicene-Constantinopolitan doctrine “consubstantiality” (homoousia) God Father. The first defines “consubstantiality”, then presents three formulations argument, finally rebuts a number possible responses: from textual originality phrase “nor Son”; rei...