What is a reprobate mind?
Reprobation, in Christian theology, is a doctrine which teaches that a person can reject the gospel to a point where God in turn rejects them and curses their conscience.
What does the Bible define as sin?
Sin is an immoral act considered to be a transgression of divine law. Hamartiology, a branch of Christian theology which is the study of sin, describes sin as an act of offence against God by despising his persons and Christian biblical law, and by injuring others.
What is the one unforgivable sin?
One eternal or unforgivable sin (blasphemy against the Holy Spirit) is specified in several passages of the Synoptic Gospels, including Mark 3:28–29, Matthew 12:31–32, and Luke 12:10.