On the Second Coming of Christ, Ch. 15 from The Truth of Our Faith by Elder Cleopa of Romania
"If neither the angels in heaven nor the Son of Man Himself as man know the appointed time, how is it possible for it to be known among men? From the words of the Saviour it is understood only that we must be ever vigilant and mindful of our salvation, ever ready for the coming of the Lord, for we know neither the day nor the hour of His coming, nor even the hour of our own end in this life. His appearance will be unexpected, as the Lord forewarned us when he said, Watch therefore, for ye know neither the day nor the hour wherein the Son of Man cometh. (Mat. 25:13)"