60 But, again, how can we believe that the Lord of glory, because He was able not to know the day of His own coming, was of a discordant and imperfect nature, subject to the necessity of coming, but ignorant of the day of His coming? This would make God weaker than the power of ignorance, which took from Him the prerogative of knowledge. Then, too, how we redouble occasions of blasphemy, if we impute not only infirmity to Christ, but also defect to God the Father, saying that He defrauded of foreknowledge of this day the Only-begotten God, the Son of His love, and in malice denied Him certainty concerning the future consummation: suffered Him to know the day and hour of His passion, but withheld from Him the day of His power, and the hour of His glory among His Saints: took from Him the knowledge of His blessedness, while He granted Him prescience of His death? The trembling conscience of man dare not presume to think thus of God, or ascribe to Him such taint of human fickleness, that the Father should deny anything to the Son, or the Son, Who was born as God, should possess an imperfect knowledge.
Source: On the Trinity (New Advent)