What does the Bible say about the soul and its immortality?

Psalm 22:29 states, 'None can keep alive his own soul,' highlighting the reality that while our physical bodies are mortal, made from and returning to dust, our souls retain eternal life. This immortal nature of the soul emphasizes our complete dependence on God for spiritual sustenance and life, as we cannot maintain our own souls independently. Thus, understanding the immortality of the soul reassures believers of eternal life through faith in Christ, despite the temporal challenges of life.