Lost:  Can a child of God be lost?

To answer this question, consider Luke 15:11-32, the story of a young man, a father, and an older brother. The two brothers represent children of God, the Father represents God.  

Verse 13 says the young brother “took his journey into a far country”. He left home; he left his father. This would represent a child of God (Christian) leaving the church and God the Father and going out into the world of sin (far country).   Was this child of God lost? Listen to the father in verse 32 as he speaks to the older brother. The father said, “be glad: for this thy brother was dead, and is alive again; and was lost, and is found”. Notice the father said “thy brother was dead”. Dead how? Not physically, but spiritually dead. Lost would mean spiritually lost also. Found would mean the younger brother was restored, back to God and the church.
For more on this subject, see “Security of the Believer”, (part three) in the "Plain Truth for a Mixed-Up World" series of articles.