This expression [of our Lord], “How often would I have gathered thy children together, and thou wouldest not,” set forth the ancient law of human liberty, because God made man a free [agent] from the beginning, possessing his own power, even as he does his own soul, to obey the behests of God voluntarily, and not by compulsion of God.
2…But since all men are of the same nature, able both to hold fast and to do what is good; and, on the other hand, having also the power to cast it from them and not to do it…
4…But because man is possessed of free will from the beginning, and God is possessed of free will, in whose likeness man was created, advice is always given to him to keep fast the good, which thing is done by means of obedience to God.
5. And not merely in works, but also in faith, has God preserved the will of man free and under his own control saying, “According to thy faith be it unto thee;” thus showing that there is a faith specially belonging to man, since he has an opinion specially his own.
Irenaeus of Lyons
Against Heresies, Book IV
Chapter XXXVII