Only a body dies so therefore resurrection is of the body, not the soul

Now the body is that which loses life, and as the result of losing it becomes dead. To the body, therefore, the term dead is only suitable. Moreover, as resurrection accrues to what is dead, and dead is a term applicable only to a body, therefore the body alone has a resurrection incidental to it. So again the word Resurrection, or (rising again), embraces only that which has fallen down. “To rise,” indeed, can be predicated of that which has never fallen down, but had already been always lying down. But “to rise again” is predicable only of that which has fallen down; because it is by rising again, in consequence of its having fallen down, that it is said to have re-risen.

Tertullian
The Five Books Against Marcion, Book V
Chapter IX

Sleep is an icon of the bodily resurrection

Accordingly, when the body shakes off its slumber, it asserts before your eye the resurrection of the dead by its own resumption of its natural functions.  Such, therefore, must be both the natural reason and the reasonable nature of sleep. If you only regard it as the image of death, you initiate faith, you nourish hope, you learn both how to die and how to live, you learn watchfulness, even while you sleep.

Tertullian
A Treatise on the Soul
Chapter XLIII

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

Our souls will return to the same bodies

Ridicule, therefore, as much as you like the excessive stupidity of such minds as die that they may live; but then, in order that you may be able to laugh more merrily, and deride us with greater boldness, you must take your sponge, or perhaps your tongue, and wipe away those records of yours every now and then cropping out, which assert in not dissimilar terms that souls will return to bodies. But how much more worthy of acceptance is our belief which maintains that they will return to the same bodies!

Tertullian
Ad Nationes, Book I
Chapter XIX

Christianity is about the death of death

Christianity is a belief, first of all and above all, in the fact that Christ did not remain in the grave, that life shone forth from death, and that in Christ’s Resurrection from the dead, the absolute, all-encompassing law of dying and death, which tolerated no exceptions, was somehow blown apart and overcome from within.

Fr. Alexander Schmemann
The Christian Concept of Death

Christ saves the entire man — body and soul

Now, since he consists of two parts, body and soul, the point to be inquired into is, in which of these two man would seem to have been lost? If in his body, then it is his body, not his soul, which is lost. What, however, is lost, the Son of man saves. The body, therefore, has the salvation. If, (on the other hand,) it is in his soul that man is lost, salvation is designed for the lost soul; and the body which is not lost is safe. If, (to take the only other supposition,) man is wholly lost, in both his natures, then it necessarily follows that salvation is appointed for the entire man; and then the opinion of the heretics is shivered to pieces, who say that there is no salvation of the flesh. And this affords a confirmation that Christ belongs to the Creator, who followed the Creator in promising the salvation of the whole man.

Tertullian
The Five Books Against Marcion, Book IV
Chapter XXXVII

Christ regenerated our lives through incarnation and resurrection

…none but Christ could become incarnate by being born of the flesh in order that by His own nativity He might regenerate our birth, and might further by His death also dissolve our death, by rising again in that flesh in which, that He might even die, He was born.

Tertullian
The Five Books Against Marcion, Book III
Chapter IX