What does the Bible say about sin as a sickness?

The Scriptures illustrate sin as a pervasive sickness that afflicts all of humanity, as noted in Isaiah 1:5, which states, 'The whole head is sick, and the whole heart faint.' This spiritual malaise originates from our disobedience, particularly the sin of Adam in the Garden of Eden, which resulted in a corruption that we all inherit. Just as a physical ailment can make us aware of our need for healing, sin reveals our desperate need for a Savior; it is through acknowledging our sin-sick state that we can seek the Physician, Jesus Christ, who alone has the power to heal.