1 Clement and Election

The author of 1 Clement would agree that it is Scripture that is to be our rule of faith.  He wrote:

1 Clement 53:1 For ye know, and know well, the sacred scriptures, dearly beloved, and ye have searched into the oracles of God. We write these things therefore to put you in remembrance.

That said, the author of 1 Clement provided numerous verses (I've identified 33 below) that mention God's calling and election, the number of the elect, and related topics.  The following are provided out of Lightfoot's excellent translation (available here)(other translations, notes, etc. available here), and are provided in response to a tweet by Leighton Flowers, which I plan to address another time.

1. 1 Clement prologue:1 The Church of God which sojourneth in Rome to the Church of God which sojourneth in Corinth, to them which are called and sanctified by the will of God through our Lord Jesus Christ. Grace to you and peace from Almighty God through Jesus Christ be multiplied.
2. 1 Clement 1:1 By reason of the sudden and repeated calamities and reverses which are befalling us, brethren, we consider that we have been somewhat tardy in giving heed to the matters of dispute that have arisen among you, dearly beloved, and to the detestable and unholy sedition, so alien and strange to the elect of God, which a few headstrong and self-willed persons have kindled to such a pitch of madness that your name, once revered and renowned and lovely in the sight of all men, hath been greatly reviled.
3. 1 Clement 2:4 Ye had conflict day and night for all the brotherhood, that the number of His elect might be saved with fearfulness and intentness of mind.
4. 1 Clement 6:1 Unto these men of holy lives was gathered a vast multitude of the elect, who through many indignities and tortures, being the victims of jealousy, set a brave example among ourselves.
5. 1 Clement 8:6 Seeing then that He desireth all His beloved to be partakers of repentance, He confirmed it by an act of His almighty will.
6. 1 Clement 11:1 For his hospitality and godliness Lot was saved from Sodom, when all the country round about was judged by fire and brimstone; the Master having thus fore shown that He forsaketh not them which set their hope on Him, but appointeth unto punishment and torment them which swerve aside.
7. 1 Clement 11:2 For when his wife had gone forth with him, being otherwise minded and not in accord, she was appointed for a sign hereunto, so that she became a pillar of salt unto this day, that it might be known unto all men that they which are double-minded and they which doubt concerning the power of God are set for a judgment and for a token unto all the generations.
8. 1 Clement 20:3 The sun and the moon and the dancing stars according to His appointment circle in harmony within the bounds assigned to them, without any swerving aside.
9. 1 Clement 27:5 Who shall say unto Him, What hast thou done? or who shall resist the might of His strength? When He listeth, and as He listeth, He will do all things; and nothing shall pass away of those things that He hath decreed.
10. 1 Clement 29:1 Let us therefore approach Him in holiness of soul, lifting up pure and undefiled hands unto Him, with love towards our gentle and compassionate Father who made us an elect portion unto Himself.
11. 1 Clement 29:2 For thus it is written: When the Most High divided the nations, when He dispersed the sons of Adam, He fixed the boundaries of the nations according to the number of the angels of God. His people Jacob became the portion of the Lord, and Israel the measurement of His inheritance.
12. 1 Clement 32:3 They all therefore were glorified and magnified, not through themselves or their own works or the righteous doing which they wrought, but through His will.
13. 1 Clement 32:4 And so we, having been called through His will in Christ Jesus, are not justified through ourselves or through our own wisdom or understanding or piety or works which we wrought in holiness of heart, but through faith, whereby the Almighty God justified all men that have been from the beginning; to whom be the glory for ever and ever. Amen.
14. 1 Clement 33:3 For by His exceeding great might He established the heavens, and in His incomprehensible wisdom He set them in order. And the earth He separated from the water that surroundeth it, and He set it firm on the sure foundation of His own will; and the living creatures which walk upon it He commanded to exist by His ordinance. Having before created the sea and the living creatures therein, He enclosed it by His own power.
15. 1 Clement 35:3 What then, think ye, are the things preparing for them that patiently await Him? The Creator and Father of the ages, the All holy One Himself knoweth their number and their beauty.
16. 1 Clement 35:4 Let us therefore contend, that we may be found in the number of those that patiently await Him, to the end that we may be partakers of His promised gifts.
17. 1Clem 36:1 This is the way, dearly beloved, wherein we found our salvation, even Jesus Christ the High priest of our offerings, the Guardian and Helper of our weakness.
18. 1 Clement 36:2 Through Him let us look steadfastly unto the heights of the heavens; through Him we behold as in a mirror His faultless and most excellent visage; through Him the eyes of our hearts were opened; through Him our foolish and darkened mind springeth up unto the light; through Him the Master willed that we should taste of the immortal knowledge Who being the brightness of His majesty is so much greater than angels, as He hath inherited a more excellent name.
19. 1 Clement 38:1 So in our case let the whole body be saved in Christ Jesus, and let each man be subject unto his neighbor, according as also he was appointed with his special grace.
20. 1 Clement 38:3 Let us consider, brethren, of what matter we were made; who and what manner of beings we were, when we came into the world; from what a sepulchre and what darkness He that molded and created us brought us into His world, having prepared His benefits aforehand ere ever we were born.
21. 1 Clement 46:3 And again He saith in another place; With the guiltless man thou shalt be guiltless, and with the elect thou shalt be elect, and with the crooked thou shalt deal crookedly.
22. 1 Clement 46:4 Let us therefore cleave to the guiltless and righteous: and these are the elect of God.
23. 1 Clement 46:6 Have we not one God and one Christ and one Spirit of grace that was shed upon us? And is there not one calling in Christ?
24. 1 Clement 46:8 Remember the words of Jesus our Lord: for He said, Woe unto that man; it were good for him if he had not been born, rather than that at he should offend one of Mine elect. It were better for him that a millstone were hanged about him, and be cast into the sea, than that he should pervert one of Mine elect.
25. 1 Clement 49:5 Love joineth us unto God; love covereth a multitude of sins; love endureth all things, is long-suffering in all things. There is nothing coarse, nothing arrogant in love. Love hath no divisions, love maketh no seditions, love doeth all things in concord. In love were all the elect of God made perfect; without love nothing is well pleasing to God:
26. 1 Clement 50:2 Who is sufficient to be found therein, save those to whom God shall vouchsafe it? Let us therefore entreat and ask of His mercy, that we may be found blameless in love, standing apart from the factiousness of men. All the generations from Adam unto this day have passed away: but they that by God's grace were perfected in love dwell in the abode of the pious; and they shall be made manifest in the visitation of the Kingdom of God.
27. 1 Clement 50:6 This declaration of blessedness was pronounced upon them that have been elected by God through Jesus Christ our Lord, to whom be the glory for ever and ever. Amen.
28. 1 Clement 52:2 For the elect David saith; I will confess unto the Lord, and it shall please Him more than a young calf that groweth horns and hoofs. Let the poor see it, and rejoice.
29. 1 Clement 58:2 Receive our counsel, and ye shall have no occasion of regret. For as God liveth, and the Lord Jesus Christ liveth, and the Holy Spirit, who are the faith and the hope of the elect, so surely shall he, who with lowliness of mind and instant in gentleness hath without regretfulness performed the ordinances and commandments that are given by God, be enrolled and have a name among the number of them that are saved through Jesus Christ, through whom is the glory unto Him for ever and ever. Amen.
30. 1 Clement 59:2 but we shall be guiltless of this sin. And we will ask, with instancy of prayer and supplication, that the Creator of the universe may guard intact unto the end the number that hath been numbered of His elect throughout the whole world, through His beloved Son Jesus Christ, through whom He called us from darkness to light, from ignorance to the full knowledge of the glory of His Name.
31. 1 Clement 59:3 [Grant unto us, Lord,] that we may set our hope on Thy Name which is the primal source of all creation, and open the eyes of our hearts, that we may know Thee, who alone abidest Highest in the lofty, Holy in the holy; who layest low in the insolence of the proud, who settest the lowly on high, and bringest the lofty low; who makest rich and makest poor; who killest and makest alive; who alone art the Benefactor of spirits and the God of all flesh; who lookest into the abysses, who scanest the works of man; the Succor of them that are in peril, the Savior of them that are in despair; The Creator and Overseer of every spirit; who multipliest the nations upon earth, and hast chosen out from all men those that love Thee through Jesus Christ, Thy beloved Son, through whom Thou didst instruct us, didst sanctify us, didst honor us.
32. 1 Clement 64:1 Finally may the All seeing God and Master of spirits and Lord of all flesh, who chose the Lord Jesus Christ, and us through Him for a peculiar people, grant unto every soul that is called after His excellent and holy Name faith, fear, peace, patience, long-suffering, temperance, chastity and soberness, that they may be well pleasing unto His Name through our High priest and Guardian Jesus Christ, through whom unto Him be glory and majesty, might and honor, both now and for ever and ever. Amen.
33. 1 Clement 65:2 The grace of our Lord Jesus Christ be with you and with all men in all places who have been called by God and through Him, through whom be glory and honor, power and greatness and eternal dominion, unto Him, from the ages past and forever and ever. Amen.