I have read Irenaeus. I find that he said much more than what you refer to.
Irenaeus Against Heresies Book 3 CHAPTER 34
Souls Can Be Recognized In The Separate State, And Are Immortal Although They Once Had A Beginning
1. The Lord has taught with very great fullness, that souls not only continue to exist, not by passing from body to body, but that they preserve the same form [in their separate state] as the body had to which they were adapted, and that they remember the deeds which they did in this state of existence, and from which they have now ceased, in that narrative which is recorded respecting the rich man and that Lazarus who found repose in the bosom of Abraham. In this account He states that Dives knew Lazarus after death, and Abraham in like manner, and that each one of these persons continued in his own proper position, and that [Dives] requested Lazarus to be sent to relieve him [Lazarus], on whom he did not [formerly] bestow even the crumbs [which fell] from his table. [He tells us] also of the answer given by Abraham, who was acquainted not only with what respected himself, but Dives also, and who enjoined those who did not wish to come into that place of torment to believe Moses and the prophets, and to receive the preaching of Him who was to rise again from the dead.
Book 2 Chap 28
That eternal fire, is prepared for sinners, both the Lord has plainly declared, and the rest of the Scriptures demonstrate. And that God foreknew that this would happen, the Scriptures do in like manner demonstrate, since He prepared eternal fire from the beginning for those who were [afterwards] to transgress [His commandments];
Book 2 Chap 33
Those, on the other hand, who are worthy of punishment, shall go away into it, they too having their own souls and their own bodies, in which they stood apart from the grace of God. Both classes shall then cease from any longer begetting and being begotten, from marrying and being given in marriage; so that the number of mankind, corresponding to the fore-ordination of God, being completed, may fully realize the scheme formed by the Father.
the Savior of those who are saved, and the Judge of those who are judged, and sending into eternal fire those who transform the truth, and despise His Father and His advent.
Book 2 Chap 32
And this same thing does the Lord also say in the Gospel, to those who are found upon the left hand: Depart from me, ye cursed, into ever: lasting fire, which my Father hath prepared for the devil and his angels; indicating that eternal fire was not originally prepared for man, but for him who beguiled man, and caused him to offend for him, I say, who is chief of the apostasy, and for those angels who became apostates along with him; which [fire], indeed, they too shall justly feel, who, like him, persevere in works of wickedness, without repentance, and without retracing their steps.
Book 3 Chap 28
Inasmuch, then, as in both Testaments there is the same righteousness of God [displayed] when God takes vengeance, in the one case indeed typically, temporarily, and more moderately; but in the other, really, enduringly, and more rigidly: for the fire is eternal, and the wrath of God which shall be revealed from heaven from the face of our Lord (as David also says, But the face of the Lord is against them that do evil, to cut off the remembrance of them from the earth), entails a heavier punishment on those who incur it, the elders pointed out that those men are devoid of sense, who, [arguing] from what happened to those who formerly did not obey God, do endeavor to bring in another Father, setting over against [these punishments] what great things the Lord had done at His coming to save those who received Him,
. . .
so is also our walk in life required to be more circumspect, when we are directed not merely to abstain from evil actions, but even from evil thoughts, and from idle words, and empty talk, and scurrilous language: thus also the punishment of those who do not believe the Word of God, and despise His advent, and are turned away backwards, is increased; being not merely temporal, but rendered also eternal. For to whomsoever the Lord shall say, Depart from me, ye cursed, into everlasting fire, these shall be damned for ever;
Book 4 Chap 39
Submission to God is eternal rest, so that they who shun the light have a place worthy of their flight; and those who fly from eternal rest, have a habitation in accordance with their fleeing. Now, since all good things are with God, they who by their own determination fly from God, do defraud themselves of all good things; and having been [thus] defrauded of all good things with respect to God, they shall consequently fall under the just judgment of God. For those persons who shun rest shall justly incur punishment, and those who avoid the light shall justly dwell in darkness. For as in the case of this temporal light, those who shun it do deliver themselves over to darkness, so that they do themselves become the cause to themselves that they are destitute of light, and do inhabit darkness; and, as I have already observed, the light is not the cause of such an [unhappy] condition of existence to them; so those who fly from the eternal light of God, which contains in itself all good things, are themselves the cause to themselves of their inhabiting eternal darkness, destitute of all good things, having become to themselves the cause of [their consignment to] an abode of that nature.