Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man. For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil. Ecclesiastes 12:13-14
And the spirit of the LORD will be caused to rest upon him; a spirit of wisdom and understanding; a spirit of counsel and strength; a spirit of knowledge and piety; a spirit of the fear of God shall fill him up. Isaiah 11:2-3 (LXX)
Fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell. Matthew 10:28
Let us be spiritually-minded: let us be a perfect temple to God. As much as in us lies, let us meditate upon the fear of God, and let us keep His commandments, that we may rejoice in His ordinances.Barnabas (A.D. 70-130) ch.4
Adorned by a thoroughly virtuous and religious life, you did all things in the fear of God. The commandments and ordinances of the Lord were written upon the tablets of your hearts. Clement of Rome (A.D. 96) ch.2
For this reason righteousness and peace are now far departed from you, inasmuch as every one abandons the fear of God, and is become blind in His faith, neither walks in the laws of His commandments. Clement of Rome (A.D. 96) ch.3
Let us fear the Lord Jesus [Christ], whose blood was given for us… the fear of Him is good and great and saves all them that walk therein in a pure mind with holiness. For He is the searcher out of the intents and desires; whose breath is in us, and when He wills, He shall take it away. Clement of Rome (A.D. 96) ch.21
The Father, who is pitiful in all things, and ready to do good, has compassion on them that fear Him. Clement of Rome (A.D. 96) ch.23
Since therefore all things are seen and heard, let us fear Him, and forsake the abominable lusts of evil works, that we may be shielded by His mercy from the coming judgments. Clement of Rome (A.D. 96) ch. 28
You see, brethren, in proportion as greater knowledge has been vouchsafed unto us, so much the more are we exposed to danger.Clement of Rome (A.D. 96) ch. 41
For such as walk in fear and love desire that they themselves should fall into suffering rather than their neighbors; and they pronounce condemnation against themselves rather than against the harmony which has been handed down to us nobly and righteously. Clement of Rome (A.D. 96) ch.50
Brethren, we ought so to think of Jesus Christ, as of God, as of the Judge of quick and dead. Second Clement (A.D. 100) ch. 1
And we ought not rather to fear men but God. For this cause, if you do these things, the Lord said, Though you be gathered together with Me in My bosom, and do not My commandments, I will cast you away and will say unto you, Depart from Me, I know you not whence you are, you workers of iniquity. Second Clement (A.D. 100) ch.4
These are the last times. Henceforth let us have reverence; let us fear the long-suffering of God, lest it turn into a judgment against us. For either let us fear the wrath which is to come or let us love the grace which now is – the one or the other; provided only that we be found in Christ Jesus unto true life. Ignatius: to the Ephesians (A.D. 35-105) ch. 11
“Fear the Lord,” said he, “and keep His commandments. So keeping the commandments of God you shall be powerful in every deed, and your doing shall be incomparable. For whilst you fear the Lord, you shall do all things well. But this is the fear wherewith you ought to be afraid, and you shall be saved. But fear not the devil; for, if you fear the Lord, you shall be master over the devil, for there is no power in him. [For] in whom is no power, neither is there fear of him; but in whom power is glorious, of him is fear likewise. Hermas (A.D. 150) Ante-Nicene Fathers vol.2 pg.37
Fear therefore is of two kinds. If you desire to do evil, fear the Lord, and you shall not do it. If again you desire to do good, fear the Lord and you shall do it. Hermas (A.D. 150) Ante-Nicene Fathers vol.2 pg. 24
Every creature fears the Lord, but not every one keeps His commandments. Those then that fear Him and keep His commandments, they have life unto God; but they that keep not His commandments have no life in them. Hermas (A.D. 150) Ante-Nicene Fathers vol.2 pg. 24
But do you clothe yourself in the desire of righteousness, and, having armed yourself with the fear of the Lord, resist them. For the fear of God dwells in the good desire. If the evil desire shall see you armed with the fear of God and resisting itself, it shall flee far from you, and shall no more be seen of you, being in fear of your arms. Hermas (A.D. 150) Ante-Nicene Fathers vol.2 pg.28
In fine, the system He pursues to inspire fear is the source of salvation. Clement of Alexandria (A.D. 195) Ante-Nicene Fathers vol.2 pg.230
By guarding against sinning, we guard against suffering. “For I would have you know,” says Jude, “that God, having once saved His people from the land of Egypt, afterwards destroyed them that believed not; and the angels which kept not their first estate, but left their own habitation, He has reserved to the judgment of the great day, in everlasting chains under darkness of the savage angels.” And a little after he sets forth, in a most instructive manner, representations of those that are judged: “Woe unto them, for they have gone in the way of Cain, and run greedily after the error of Balaam, and perished in the gainsaying of Core.” For those, who cannot attain the privilege of adoption, fear keeps from growing insolent. For punishments and threats are for this end, that fearing the penalty we may abstain from sinning. Clement of Alexandria (A.D. 195) Ante-Nicene Fathers vol.2 pg.282
They say that God is not to be feared; therefore all things are in their view free and unchecked. Where, however is God not feared, except where He is not? Where God is not, there truth also is not. Where there is no truth, then, naturally enough, there is also such a discipline as theirs. Tertullian (A.D. 198) Ante-Nicene Fathers vol.3 pg.264-265
Fear is the foundation of salvation; presumption is an impediment to fear. More useful, then, is it to apprehend that we may possibly fail, than to presume that we cannot; for apprehending will lead us to fear, fearing to caution, and caution to salvation. On the other hand, if we presume, there will be neither fear nor caution to save us. Tertullian (A.D. 198) Ante-Nicene Fathers vol.4 pg. 19