Phil.4:1-3 Clement of Rome

1Cor.15:1-2
Now I would remind you, brethren, in what terms I preached to you the gospel,
which you received,
in which you stand, by which you are saved,
if you hold it fast
-- unless you believed in vain.


Phil.4:1-3
Therefore, my brethren, whom I love and long for, my joy and crown, stand firm thus in the Lord, my beloved. I entreat Eu-o'dia and I entreat Syn'tyche to agree in the Lord. And I ask you also, true yokefellow, help these women, for they have labored side by side with me in the gospel together with Clement and the rest of my fellow workers, whose names are in the book of life.


Quote

But not to dwell upon ancient examples, let us come to the most recent spiritual heroes. Let us take the noble examples furnished in our own generation. Through envy and jealousy, the greatest and most righteous pillars of the Church have been persecuted and put to death.

Let us set before our eyes the illustrious apostles. Peter, through unrighteous envy, endured not one or two, but numerous labours and when he had at length suffered martyrdom, departed to the place of glory due to him. Owing to envy, Paul also obtained the reward of patient endurance, after being seven times thrown into captivity, compelled to flee, and stoned. After preaching both in the east and west, he gained the illustrious reputation due to his faith, having taught righteousness to the whole world, and come to the extreme limit of the west, and suffered martyrdom under the prefects. Thus was he removed from the world, and went into the holy place, having proved himself a striking example of patience.

Source: The First Epistle of Clement to the Corinthians Ch 5

Who was Clement?
Around the year 95 AD, a letter was written by the Church of Rome to the Church at Corinth that is attributed to Saint Clement.
This document is the earliest Christian writing besides the New Testament documents.
In fact, the Gospel of John is likely written around the same time as this document.
This "first letter of Clement" was copied by the Corinthian Church and circulated all over the empire.
It was so highly regarded by the universal church that for several centuries the Church in Egypt and elsewhere regarded it as one of the New Testament scriptures.
Source: www.crossroadsinitiative.com

Early Church Father
The Early Church Fathers are important Christian writers after the New Testament era who, because of closeness to that New Testament era, witness to the authentically apostolic way of interpreting the Scriptures handed on to them by the Apostles themselves or by someone who was taught by the Apostles (and so on).
They are the ones who identified for us the particular writings that should be regarded as inspired Scriptures well before the final list of books were defined as making up the Bible as we know it today.

Clement is one person who has been called an Early Church Father.

These early Christian writings are THE source where we find out about the early church, the heresies, the persecutions etc.
To read more about the Early Church Fathers
http://www.newadvent.org/fathers/index.html

or google “Early Church Fathers”