What does the Bible say about fearing death?

In Luke 12:4-5, Jesus tells His disciples not to fear those who can kill the body, but to fear Him who has the power to cast into hell. This emphasizes that while physical death may be intimidating, it is ultimately God who determines our eternal fate. For believers, the fear of death can be alleviated by the assurance that their relationship with God is secure. 1 John 4:18 states that perfect love casts out fear, indicating that understanding God's love and grace liberates believers from the bondage of fearing death.