What does the Bible say about soul sickness?

The Bible draws a parallel between soul sickness and the condition of humanity due to sin. For instance, Isaiah portrays a sinful people as a 'sick people,' stating that 'the whole head is sick and the whole heart faints' (Isaiah 1:5). This indicates that our spiritual ailment affects us entirely, much like a physical disease. The root cause is sin, which estranges us from God and creates a state of moral and spiritual sickness that ultimately leads to death (Romans 6:23). Acknowledging this soul sickness is the first step toward recognizing our need for healing found only in Christ, the great Physician.