The Concept of Mortal Sin in Scripture

The concept of Mortal Sin is clearly taught in Scripture. The language of the doctrine is drawn directly from Scripture itself, particularly from First John. In First John 5, 16-17, it states that there is sin which is mortal, implying a sin that causes spiritual or physical death, or a grave sin continued to the point of death. This passage envisions the possibility of a Christian sinning in such a way. Other New Testament passages, such as in Corinthians, also indicate that Christians can commit sins that cost them salvation. Paul warns against deception and emphasizes the need to adhere to the gospel, as failure to do so could result in Christians believing in vain and not inheriting the kingdom of God.