Bible Verses About Spiritual Death: Hypocrisy is

1And unto the angel of the church in Sardis write; These things saith he that hath the seven Spirits of God, and the seven stars; I know thy works, that thou hast a name that thou livest, and art dead.

2Be watchful, and strengthen the things which remain, that are ready to die: for I have not found thy works perfect before God.