Man must appear at the judgment in both body and soul

Thus it follows that the fulness and perfection of the judgment consists simply in representing the interests of the entire human being. Now, since the entire man consists of the union of the two natures, he must therefore appear in both, as it is right that he should be judged in his entirety; nor, of course, did he pass through life except in his entire state.  As therefore he lived, so also must he be judged, because he has to be judged concerning the way in which he lived. For life is the cause of judgment, and it must undergo investigation in as many natures as it possessed when it discharged its vital functions.

Tertullian
On the Resurrection of the Flesh
Chapter XIV

Man appears before the judgment seat of Christ in the body

In this view it is that he informs us how “we must all appear before the judgement-seat of Christ, that every one may receive the things done in his body, according as he hath done either good or bad.” Since, however, there is then to be a retribution according to men’s merits, how will any be able to reckon with God? But by mentioning both the judgment-seat and the distinction between works good and bad, he sets before us a Judge who is to award both sentences, and has thereby affirmed that all will have to be present at the tribunal in their bodies. For it will be impossible to pass sentence except on the body, for what has been done in the body. God would be unjust, if any one were not punished or else rewarded in that very condition, wherein the merit was itself achieved.

Tertullian
The Five Books Against Marcion, Book V
Chapter XII

Men’s souls return to their bodies to be judged

Accordingly, God’s judgment will be more full and complete, because it will be pronounced at the very last, in an eternal irrevocable sentence, both of punishment and of consolation, (on men whose) souls are not to transmigrate into beasts, but are to return into their own proper bodies. And all this once for all, and on “that day, too, of which the Father only knoweth;” (only knoweth,) in order that by her trembling expectation faith may make full trial of her anxious sincerity, keeping her gaze ever fixed on that day, in her perpetual ignorance of it, daily fearing that for which she yet daily hopes.

Tertullian
A Treatise on the Soul
Chapter XXXIII

The soul awaits the last judgement after death. Christ preached to the souls in Hades.

But what is that which is removed to Hades after the separation of the body; which is there detained; which is reserved until the day of judgment; to which Christ also, on dying, descended? I imagine it is the souls of the patriarchs.

Tertullian
A Treatise on the Soul
Chapter VII

People continue to exist as disembodied souls after death and before the resurrection

Even now, as the matter refers to thy opinion on a point the more closely belonging to thee, in so far as it bears on thy personal well-being, we maintain that after life has passed away thou still remainest in existence, and lookest forward to a day of judgment, and according to thy deserts art assigned to misery or bliss, in either way of it for ever; that, to be capable of this, thy former substance must needs return to thee, the matter and the memory of the very same human being: for neither good nor evil couldst thou feel if thou wert not endowed again with that sensitive bodily organization, and there would be no grounds for judgment without the presentation of the very person to whom the sufferings of judgment were due. That

Tertullian
The Soul’s Testimony
Chapter IV

Christ receives the prayers of the saints

For as much, then, as there is but one Son of man whose advent is placed between the two issues of catastrophe and promise, it must needs follow that to that one Son of man belong both the judgments upon the nations, and the prayers of the saints.

Tertullian
The Five Books Against Marcion, Book IV
Chapter XXXIX

Christ as God awards everlasting punishment or salvation

If so, you have here, O heretics, during your present lifetime, a warning that Moses and the prophets declare one only God, the Creator, and His only Christ, and how that both awards of everlasting punishment and eternal salvation rest with Him, the one only God, who kills and who makes alive.

Tertullian
The Five Books Against Marcion, Book IV
Chapter XXXIV

God will judge our works

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
Chapter XXIII

Justice is the fullness of the Deity himself

Thus the entire office of justice in this respect becomes an agency for goodness: whatever it condemns by its judgment, whatever it chastises by its condemnation, whatever (to use your phrase) it ruthlessly pursues, it, in fact, benefits with good instead of injuring. Indeed, the fear of judgment contributes to good, not to evil. For good, now contending with an enemy, was not strong enough to recommend itself by itself alone.

…We dread the Creator’s tremendous threats, and yet scarcely turn away from evil. What, if He threatened not? Will you call this justice an evil, when it is all unfavourable to evil? Will you deny it to be a good, when it has its eye towards good? What sort of being ought you to wish God to be? Would it be right to prefer that He should be such, that sins might flourish under Him, and the devil make mock at Him? Would you suppose Him to be a good God, who should be able to make a man worse by security in sin? Who is the author of good, but He who also requires it? In like manner who is a stranger to evil, except Him who is its enemy? Who its enemy, besides Him who is its conqueror? Who else its conqueror, than He who is its punisher? Thus God is wholly good, because in all things He is on the side of good.

…How can I follow after the reward of innocence, if I have no regard to the requital of wrong-doing?

…Thus far, then, justice is the very fulness of the Deity Himself, manifesting God as both a perfect father and a perfect master: a father in His mercy, a master in His discipline; a father in the mildness of His power, a master in its severity; a father who must be loved with dutiful affection, a master who must needs be feared; be loved, because He prefers mercy to sacrifice; be feared because He dislikes sin; be loved, because He prefers the sinner’s repentance to his death; be feared, because He dislikes the sinners who do not repent.

Accordingly, the divine law enjoins duties in respect of both these attributes: Thou shalt love God, and, Thou shalt fear God. It proposed one for the obedient man, the other for the transgressor.

Tertullian
The Five Books Against Marcion, Book II
Chapter XIII