Matthew 24:44

Watch for your life's sake. Let not your lamps be quenched, nor your loins unloosed; but be ye ready, for ye know not the hour in which our Lord cometh. But often shall ye come together, seeking the things which are befitting to your souls: for the whole time of your faith will not profit you, if ye be not made perfect in the last time. For in the last days false prophets and corrupters shall be multiplied, and the sheep shall be turned into wolves, and love shall be turned into hate; for when lawlessness increaseth, they shall hate and persecute and betray one another, and then shall appear the world-deceiver as Son of God, and shall do signs and wonders, and the earth shall be delivered into his hands, and he shall do iniquitous things which have never yet come to pass since the beginning. Then shall the creation of men come into the fire of trial, and many shall be made to stumble and shall perish; but they that endure in their faith shall be saved from under the curse itself. And then shall appear the signs of the truth; first, the sign of an out-spreading in heaven; then the sign of the sound of the trumpet; and the third, the resurrection of the dead; yet not of all, but as it is said: The Lord shall come and all His saints with Him. Then shall the world see the Lord coming upon the clouds of heaven.

After this again, that they may not ask about it, He added, "Watch therefore, for ye know not what hour your Lord doth come." He said not, "I know not," but, "ye know not." For when He had brought them well nigh to the very hour, and had placed them there, again He deters them from the inquiry, from a desire that they should be striving always. Therefore He saith, "Watch," showing that for the sake of this, He did not tell it. "But know this, that if the good man of the house had known in what watch the thief would come, he would have watched, and would not have suffered his house to be broken up. Therefore be ye also ready, for in such an hour as ye think not the Son of Man cometh." For this intent He tells them not, in order that they may watch, that they may be always ready; therefore He saith, When ye look not for it, then He will come, desiring that they should be anxiously waiting, and continually in virtuous action. But His meaning is like this: if the common sort of men knew when they were to die, they would surely strive earnestly at that hour. In order therefore that they may strive, not at that hour only, therefore He tells them not either the common hour, or the hour of each, desiring them to be ever looking for this, that they may be always striving. Wherefore He made the end of each man's life also uncertain. After this, He openly calls Himself Lord, having nowhere spoken so distinctly. But here He seems to me also to put to shame the careless, that not even as much care as they that expect a thief have taken for their money, not even this much do these take for their own soul. For they indeed, when they expect it, watch, and suffer none of the things in their house to be carried off; but ye, although knowing that He will come, and come assuredly, continue not watching, saith He, and ready so as not to be carried away hence unprepared. […]

For in the last days false prophets shall be multiplied, and such as corrupt the word; and the sheep shall be changed into wolves, and love into hatred: for through the abounding of iniquity the love of many shall wax cold. For men shall hate, and persecute, and betray one another. And then shall appear the deceiver of the world, the enemy of the truth, the prince of lies, [2 Thessalonians 2:3-12] whom the Lord Jesus "shall destroy with the spirit of His mouth, who takes away the wicked with His lips; and many shall be offended at Him. But they that endure to the end, the same shall be saved. And then shall appear the sign of the Son of man in heaven;" [Isaiah 11:4; Matthew 24:1-51] and afterwards shall be the voice of a trumpet by the archangel; and in that interval shall be the revival of those that were asleep. And then shall the Lord come, and all His saints with Him, with a great concussion above the clouds, with the angels of His power, [Matthew 16:27] in the throne of His kingdom, to condemn the devil, the deceiver of the world, and to render to every one according to his deeds. "Then shall the wicked go away into everlasting punishment, but the righteous shall go into life eternal," [Matthew 25:46] to inherit those things "which eye has not seen, nor ear heard, nor have entered into the heart of man, such things as God has prepared for them that love Him;" [1 Corinthians 2:9] and they shall rejoice in the kingdom of God, which is in Christ Jesus.

(Hom. in Ev. xiii. 5.) And the Lord would therefore have the last hour unknown, that it might always be in suspense, and that being unable to foresee it, we might never be unprepared for it.

And you also be ready, because at the hour that you think not, the Son of man shall come. Chrysostom says that men who are anxious about temporal things watch at night. And if they watch for temporal things, how much more must one watch …