Christ acted for our advantage in being unwilling to
reveal the day of judgment. This is made plain by other words of
our Lord and by a not dissimilar passage from Paul’s
writings. Other passages in which the same ignorance seems to be
attributed to the Father are brought forward to meet those who are
anxious to know why Christ answered His disciples, as though He did not
know. From these Ambrose argues against them that if they admit
ignorance and inability in the Father, they must admit that the same
Substance exists in the Son as in the Father; unless they prefer to
accuse the Son of falsehood; since it belongs neither to Him nor to the
Father to deceive, but the unity of both is pointed out in the passage
named.