In Platonic phrase, indeed, the body is a prison, but in the apostle’s it is “the temple of God,” because it is in Christ. Still, (as must be admitted,) by reason of its enclosure it obstructs and obscures the soul, and sullies it by the concretion of the flesh; whence it happens that the light which illumines objects comes in upon the soul in a more confused manner, as if through a window of horn. Undoubtedly, when the soul, by the power of death, is released from its concretion with the flesh, it is by the very release cleansed and purified: it is, moreover, certain that it escapes from the veil of the flesh into open space, to its clear, and pure, and intrinsic light; and then finds itself enjoying its enfranchisement from matter, and by virtue of its liberty it recovers its divinity, as one who awakes out of sleep passes from images to verities. Then it tells out what it sees; then it exults or it fears, according as it finds what lodging is prepared for it, as soon as it sees the very angel’s face, that arraigner of souls, the Mercury of the poets.
Tertullian
A Treatise on the Soul
Chapter LIII