@Jonathan_Burke, perhaps these texts find the middle ground?: Mankind, without God’s intervention, is mortal.
The Bible makes it clear that mortal man doesn’t have immortality. “God alone is immortal“, 1 Tim.6:15-16
“. . . the King of kings, and Lord of lords; Who only [alone] hath immortality, dwelling in the light which no man can approach unto…”
Those who seek immortality will get it, Rom.2:6-7:
"Who will render to every man according to his deeds: To them who by patient continuance in well doing seek for glory and honour and immortality, eternal life. . . "
Jesus brought life and immortality to light through the Gospel, 2 Tim.1:10.
“But is now made manifest by the appearing of our Saviour Jesus Christ, who hath abolished death, and hath brought life and immortality to light through the gospel…”
1 Cor 15 discusses the spirit and resurrection, but doesn’t quite equate the spirit to a soul, or equate resurrection with immortality:
1Co 15:42-44
"So also is the resurrection of the dead. It is sown in corruption; it is raised in incorruption:
It is sown in dishonour; it is raised in glory: it is sown in weakness; it is raised in power:
It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body."
But if we take this text with the other texts, can’t we confidently say that while the soul might not be inherently immortal, the appearance of Jesus gives immortality to the believers?