Early Saints quotes on Election, Predestination and Foreknowledge:

He then avoids denying Christ through fear by reason of the command; nor does he sell his faith in the hope of the gifts prepared, but in love to the Lord he will most gladly depart from this life; perhaps giving thanks both to him who afforded the cause of his departure hence, and to him who laid the plot against him, for receiving an honorable reason which he himself furnished not, for showing what he is, to him by his patience, and to the Lord in love, by which even before his birth he was manifested to the Lord, who knew the martyr's choice. Clement of Alexandria (A.D. 195) Ante-Nicene Fathers vol.2 pg.411

But there being but one First Cause, as will be shown afterwards, these men will be shown to be inventors of chatterings and chirpings. But since God deemed it advantageous, that from the law and the prophets, men should receive a preparatory discipline by the Lord, the fear of the Lord was called the beginning of wisdom, being given by the Lord, through Moses, to the disobedient and hard of heart. For those whom reason convinces not, fear tames; which also the Instructing Word, foreseeing from the first, and purifying by each of these methods, adapted the instrument suitably for piety. (Clement of Alexandria The Stromata, or Miscellanies: Book II)

"But if one say to us, that some sinners even obtain according to their requests, [we should say] that this rarely takes place, by reason of the righteous goodness of God. And it is granted to those who are capable of doing others good. Whence the gift is not made for the sake of him that asked it; but the divine dispensation, foreseeing that one would be saved by his means, renders the boon again righteous. And to those who are worthy, things which are really good are given, even without their asking.
Whenever, then, one is righteous, not from necessity or out of fear or hope, but from free choice, this is called the royal road, which the royal race travel. But the byways are slippery and precipitous. If, then, one take away fear and honour, I do not know if the illustrious among the philosophers, who use such freedom of speech, will any longer endure afflictions." (Clement of Alexandria - The Stromata, or Miscellanies: Book 7)

He was asked respecting those things on account of which He descended, which He inculcates, which He teaches, which He offers, in order to show the essence of the Gospel, that it is the gift of eternal life. For He foresaw as God, both what He would be asked, and what each one would answer Him. For who should do this more than the Prophet of prophets, and the Lord of every prophetic spirit? (Clement of Alexandria -Who is the Rich man that shall be saved?)

If, therefore, in the present time also, God, knowing the number of those who will not believe, since He foreknows all things, has given them over to unbelief, and turned away His face from men of this stamp, leaving them in the darkness which they have themselves chosen for themselves, what is there wonderful if He did also at that time give over to their unbelief, Pharaoh, who never would have believed, along with those who were with him? Irenaeus (A.D. 180) Ante-Nicene Fathers vol.1 pg. 502

The will and the energy of God is the effective and foreseeing cause of every time and place and age, and of every nature. The will is the reason (λόγος) of the intellectual soul, which [reason] is within us, inasmuch as it is the faculty belonging to it which is endowed with freedom of action. The will is the mind desiring [some object], and an appetite possessed of intelligence, yearning after that thing which is desired. (Irenaeus - Fragments from the lost writings of Irenaeus)

God, wishing men and angels to follow His will, resolved to create them free to do righteousness; possessing reason, that they may know by whom they are created, and through whom they, not existing formerly, do now exist; and with a law that they should be judged by Him, if they do anything contrary to right reason: and of ourselves we, men and angels, shall be convicted of having acted sinfully, unless we repent beforehand. But if the word of God foretells that some angels and men shall be certainly punished, it did so because it foreknew that they would be unchangeably [wicked], but not because God had created them so. So that if they repent, all who wish for it can obtain mercy from God. Justin Martyr (A.D. 160) Ante-Nicene Fathers vol.1 pg.270

But God foreknowing all that shall be done by all men, and it being His decree that the future actions of men shall all be recompensed according to their several value, He foretells by the Spirit of prophecy that He will bestow meet rewards according to the merit of the actions done, always urging the human race to effort and recollection, showing that He cares and provides for men. Justin Martyr (A.D. 160) Ante-Nicene Fathers vol.1 pg.177

JUSTIN MARTYR: (110-165 AD) "God's foreknowledge is intuitive, not active, and is caused by man's choices."

"For if it is predetermined that this man will be good, and this other man will be evil, neither is the first one meritorious nor the latter man to be blamed. And again, unless the human race has the power of avoiding the evil and choosing good by free choice, they are not accountable for their actions" (Justin Martyr)

It is not because God knows that something is going to b e that that thing is going to be, but rather it is because it is going to be that it is know by God before it comes to be. For even if we imagine for the sake of argument that God does not foreknow anything it was without a doubt going to happen that, say Judas became a traitor, and this is just the way the prophets foretold it would happen. Therefore, it was not because the prophets foretold it that Judas became a traitor, but rather it was because he was going to be a traitor that the prophets foretold the things that he was going to do by his wicked designs, even though Judas most certainly had it within his power to be like Peter and John if he had so willed; but he chose the desire for money over the glory of apostolic companionship, and the prophets, foreseeing that this choice of his, handed it down in their books. Moreover, in order that you might understand that the cause of each person’s salvation is to be found not I God’s foreknowledge but in that person’s intentions and actions, notice that Paul tormented his body and subjected it to servitude because he feared that, after having preached to others, he himself might perhaps become reprobate. (Origen, Book 7 of his commentary on the epistle to the Romans (Romans chapter 8).

You ought, however, to deduct from God's attributes both His supreme earnestness of purpose and most excellent truth in His whole creation, if you would cease to inquire whether anything could have happened against the will of God. For, while holding this earnestness and truth of the good God, which are indeed capable of proof from the rational creation, you will not wonder at the fact that God did not interfere to prevent the occurrence of what He wished not to happen, in order that He might keep from harm what He wished. …The necessary consequence, therefore, was, that God must separate from the liberty which He had once for all bestowed upon man (in other words, keep within Himself), both His foreknowledge and power, through which He might have prevented man's falling into danger when attempting wrongly to enjoy his liberty. Now, if He had interposed, He would have rescinded the liberty of man's will, which He had permitted with set purpose, and in goodness. ….If He had checked (man's freedom), would He not then seem to have been rather deceived, through want of foresight into the future? But in giving it full scope, who would not say that He did so in ignorance of the issue of things? God, however, did fore-know that man would make a bad use of his created constitution; and yet what can be so worthy of God as His earnestness of purpose, and the truth of His created works, be they what they may? (Tertullian, Against Marcion book 2 chapter 7)

Now, although you will have it that He is inconstant in respect of persons, sometimes disapproving where approbation is deserved; or else wanting in foresight, bestowing approbation on men who ought rather to be reprobated, as if He either censured His own past judgments, or could not forecast His future ones; yet nothing is so consistent for even a good judge as both to reject and to choose on the merits of the present moment. Saul is chosen, but he is not yet the despiser of the prophet Samuel. Solomon is rejected; but he is now become a prey to foreign women, and a slave to the idols of Moab and Sidon. What must the Creator do, in order to escape the censure of the Marcionites? Must He prematurely condemn men, who are thus far correct in their conduct, because of future delinquencies? But it is not the mark of a good God to condemn beforehand persons who have not yet deserved condemnation. Must He then refuse to eject sinners, on account of their previous good deeds? But it is not the characteristic of a just judge to forgive sins in consideration of former virtues which are no longer practised. Now, who is so faultless among men, that God could always have him in His choice, and never be able to reject him? Or who, on the other hand, is so void of any good work, that God could reject him for ever, and never be able to choose him? Show me, then, the man who is always good, and he will not be rejected; show me, too, him who is always evil, and he will never be chosen.  Should, however, the same man, being found on different occasions in the pursuit of both (good and evil) be recompensed in both directions by God, who is both a good and judicial Being, He does not change His judgments through inconstancy or want of foresight, but dispenses reward according to the deserts of each case with a most unwavering and provident decision. (Tertullian, The Five Books Against Marcion, Book II, Chap. XXIII)

And if it must needs be said that foreknowledge of events is not the cause of the occurence of those events; for a foreknown sinner, when he sins, does not thereby hold God within his power – why, what is even more wonderful, we do in fact say that the event about to take place is the cause of the existence of the foreknowledge concerning it. For not because it is known does it take place; but because it is about to take place, it is known. A distinction must be made. Indeed, we will not concede to the interpretation some make: that something absolutely must come about because what is foreknown must necessarily be about to take place. For we do not say that because it was foreknown that Judas would become a traitor, it was therefore of utter necessity that Judas become a traitor. (Eusebius of Caesarea ca. 263-339 -- Preparation for the Gospel, 6:11)

For the heavenly Logos, a spirit emanating from the Father and a Logos from the Logos-power, in imitation of the Father who begat Him made man an image of immortality, so that, as incorruption is with God, in like manner, man, sharing in a part of God, might have the immortal principle also. The Logos, too, before the creation of men, was the Framer of angels. And each of these two orders of creatures was made free to act as it pleased, not having the nature of good, which again is with God alone, but is brought to perfection in men through their freedom of choice, in order that the bad man may be justly punished, having become depraved through his own fault, but the just man be deservedly praised for his virtuous deeds, since in the exercise of his free choice he refrained from transgressing the will of God. Such is the constitution of things in reference to angels and men. And the power of the Logos, having in itself a faculty to foresee future events, not as fated, but as taking place by the choice of free agents, foretold from time to time the issues of things to come; it also became a forbidder of wickedness by means of prohibitions, and the encomiast of those who remained good. And, when men attached themselves to one who was more subtle than the rest, having regard to his being the first-born, and declared him to be God, though he was resisting the law of God, then the power of the Logos excluded the beginner of the folly and his adherents from all fellowship with Himself. And so he who was made in the likeness of God, since the more powerful spirit is separated from him, becomes mortal; but that first-begotten one through his transgression and ignorance becomes a demon; and they who imitated him, that is his illusions, are become a host of demons, and through their freedom of choice have been given up to their own infatuation. (TatianAddress to the Greeks- chapter 7, Chapter VII.—Concerning the Fall of Man.)

"For God, comprehending all things by means of His foreknowledge, and foreseeing what consequences would result from both of these, wished to make these known to mankind by His prophets, that those who understand their words might be familiarized with the good, and be on their guard against its opposite." (Origen Against Celsus: Book 6 Chapter XLV)