Can the Unfaithful Christian Return to Christ?
Yes, provided they sincerely desire to come back. The book of Hebrews deals more with this issue of falling away than does any other book in the New Testament because many Jewish Christians were falling away from the church to go back to Judaism. In Hebrews 6:4-6 we read, "For as touching those who were once enlightened and tasted of the heavenly gift, and were made partakers of the Holy Spirit, and tasted the good word of God, and the powers of the age to come, and then fell away, it is impossible to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame" (ASV).