Teaching of the Lord to the Nations Through the 12 Apostles» (Didache), 1st century
Watch over your lives; your lamps must keep burning, and (let) your loins be girded. But be ready, for you do not know the hour in which your Lord will come. You must often get together exploring what is good for your souls, for the time in which you can practice your faith will not benefit you unless you are perfect by the last hour. For in the last days, false prophets and destroyers will multiply, sheep will turn into wolves, and love will turn into hatred. With the increase of lawlessness, people will start hating and persecuting each other, and then the deceiver of the world will appear like unto the Son of God and will show signs and wonders, and the earth will be given into his hands, and he will work iniquities that have never been seen before. Then the human race will be subjected to fiery trials, and many will be led astray and perish, but those who stand firm in their faith will be saved from his curse. And then the sign of the truth will appear: first, the sign of the opened sky, then the sign of the trumpet, and then the third one – the resurrection of the dead. But not all will rise (together) but as it says: «The Lord will come together with all the saints» [Zech 14:5; 1 Thess 3:13]. Then, the world will see the Lord coming down on the clouds (Didache, chapter 16).
St. Clement of Rome, the Apostle, one of the 70 (died c. 99)
So, do we consider it marvelous and wonderful that the Creator of all things should raise all those who have diligently served Him in hope and good faith when He will use even a bird to reveal His great promises to us? For somewhere it says: and you will raise me up, and I will praise you. Also: I fell asleep and slept but rose again because you are with me. In the same way, Job says: «You will restore this flesh of mine which suffers all this» [compare Job 42:18] (1 Corinthians, chapter 26).
So, having accepted the command, the Apostles, fully convinced through the resurrection of our Lord Jesus Christ and strengthened in their faith by the word of God, went out to preach the coming Kingdom in the fullness of the Holy Spirit (1 Corinthians, chapter 42).
All the generations from Adam until now have passed, but those who have been perfected in love by the grace of God are in the place of the godly: they will be revealed with the coming of the Kingdom of Christ. For it is written: «Enter into the earthly tabernacle for a while until My anger and indignation have passed, and I will remember the day of goodness and will bring you out of your tombs» [Is 26:20; Ezek 37:12—13] (1 Corinthians, chapter 50).
And you know, brethren, that the sojourn of our flesh in this world is of short duration, and the promise of Christ is great and wondrous, namely, peace in the future Kingdom and eternal life (2 Corinthians, chapter 5).
Let us consider that it is better to deny the temporary earthly blessings because they are small, short-lived, and perishable, and embrace those other blessings as beautiful and imperishable. For in obeying the will of Christ we shall find peace; otherwise, no one will be able to deliver us from the eternal punishment, should we scorn His commandments. And Scripture says in the book of Ezekiel that «if Noah, and Job, and Daniel rose from the dead, they would not be able to save their children who are in captivity» [Ezek 14:20]. But if even these righteous men cannot save their children by their own righteousness, then what hope do we have for entering the Kingdom of God unless we keep our baptism pure and blameless? Or who will be our intercessor if no righteous and godly works are found in us? (2 Corinthians, chapter 6).
For as we are called in the flesh, so will we appear before the judgment seat in the flesh. Just as our Lord, the Savior, was once a Spirit but became flesh and called us in the flesh, so we shall receive our reward in this flesh. Let us love one another so that all may enter into the Kingdom of God (2 Corinthians, chapter 9).
For He who promised to reward each person according to his works is faithful. If we do what is right in the eyes of God, then we shall enter His Kingdom and receive the blessings according to the promise: «Eye hath not seen, nor ear heard, neither have entered into the heart of man» [1 Cor 2:9] (2 Corinthians, chapter 11).
So, let us in love and godliness expect the Kingdom of God at any moment because we do not know the day of His coming (2 Corinthians, chapter 12).
(31) […] Watch over your lives. Let your loins be girded about, and your lights burning; and ye yourselves like unto men that wait for their lord, when he will return, whether in the morning or in the evening, for the Lord will come at an hour when you think not. If ye open the door – «blessed are those servants, whom the lord when he cometh shall find watching. He shall gird himself, and make them to sit down to meat, and will come forth and serve them» [Lk 12:37]. Be ye vigilant and pray so you won’t fall into slumber unto death, for all the former virtues will not help you at the hour of your departure if you have strayed away from the true faith.
(32) In the last days, false prophets and Word defilers will multiply, and sheep will turn into wolves, and love into hatred; for with the increase of iniquity the love of many will grow cold, and people will hate, persecute, and betray one another. And then the deceiver of the world will come, the enemy of truth, the champion of lies, whom our Lord Jesus will slay with the Spirit of His mouth, destroying the ungodly with his word. And many will fall into temptation, but those who endure to the end will be saved. And then the sign of the Son of Man will appear in heaven followed by the trumpet sound by the archangel and the resurrection of the dead, and then the Lord will come down in the midst of clouds, sitting on His throne, with angelic hosts and all His saints – to condemn the deceiver of the world, the devil, and repay each one according to his deeds. Then the wicked will depart into eternal perdition, and the righteous will go to eternal life inheriting what no eye has seen, no ear has heard, and what never came to a person’s heart – what God prepared for those who love Him. They will rejoice in the Kingdom of God in Christ Jesus […] (Apostolic Decrees [through St. Clement, Bishop and Citizen of Rome], book 7).
St. Ignatius of Antioch, the God-Bearer (died 107)
Ignatius the God-Bearer, loved by God and Father of Jesus Christ, a saint in the church of Tralia in Asia which is chosen and worthy of God, enjoying the peace in the flesh and blood and the suffering of Jesus Christ who is our hope when we rise from the dead transformed into His image – sends his greetings in full in the manner of the Apostles and wishes you to rejoice greatly (Epistle to the Trallians, Prologue).
Therefore, do not listen to those who preach another Jesus Christ, different from the One who came from the line of David through Mary, was truly born, ate and drank, was condemned under Pontius Pilate, was truly crucified and died in view of those in heaven, earth and under the earth, and then truly rose from the dead because His Father had raised Him, and who will in the similar fashion bring to life those who believe unto Jesus Christ, for without Him we have no life which is life indeed (Epistle to the Thrallians, chapter 9).
I praise our Lord Jesus Christ who made you so wise. For I have learned that you hold steadfastly to your faith as if nailed to the cross of our Lord Jesus Christ both in flesh and spirit, being strengthened in love by the blood of Christ and and full of faith in our Lord who has truly come from the house of David according to the flesh but is the Son of God through the will and power of God. He was indeed born of the Virgin, baptized by John, and crucified for us in the flesh by Pontius Pilate and Herod the Tetrarch to fulfill all the righteousness (we are the fruit of his most blessed suffering) in order to establish a sign for the saints and the faithful through the resurrection from the dead, both among Jews and Gentiles united in one body of the Church (Epistle to the Smyrnaeans, chapter 1).
For I know and believe that He was and is in the flesh even after His resurrection. When he appeared to his followers with Peter, he said to them, «Touch me and see that I am not a bodiless spirit» They immediately touched Him and believed, being convinced by His flesh and spirit. Therefore, they despised even death and triumphed