We are not all God’s children (1 John 3:10). Some people are spiritually dead:
Jesus said to him, “Let the dead bury their own dead, but you go and proclaim the kingdom of God.” (Luke 9:60)
All Christians, before getting born again, were spiritually dead. That is why one of the evidences for saving grace in a person’s life is related to passing from spiritual death to life:
We know that we have passed from death to life, because we love our brothers. Anyone who does not love remains in death. (1 John 3:14)
The other type of spiritually dead person is a backslider. The clearest example of such is the prodigal, who was both spiritually dead and lost when in wild living and with the prostitutes (Luke 15:24). He became spiritually dead by turning from God to sin. Hence, some people are spiritually dead because they were never saved, but others were saved at a past point and have since returned as a dog to his vomit (2 Pet. 2:20-22) to a life without God, as a spiritually dead man again.
[Dan Corner has been studying and teaching the Bible’s message for over 30 years.]