I believe many are in name only calling themselves a Christian, but not truly one by spiritual rebirth and conversion, being enjoined into the body of Christ by the Holy Spirit. An example would be these who called Jesus Lord, but He did not know them, as they were also still workers of iniquity.
Matthew 7:22-23
[SUP]22 [/SUP]Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
[SUP]23 [/SUP]And then will I profess unto them, I never knew you: depart from me, ye that work iniquity."
Luke 13:23-27
[SUP]23 [/SUP]Then said one unto him, Lord, are there few that be saved? And he said unto them,
[SUP]24 [/SUP]Strive to enter in at the strait gate: for many, I say unto you, will seek to enter in, and shall not be able.
[SUP]25 [/SUP]When once the master of the house is risen up, and hath shut to the door, and ye begin to stand without, and to knock at the door, saying, Lord, Lord, open unto us; and he shall answer and say unto you, I know you not whence ye are:
[SUP]26 [/SUP]Then shall ye begin to say, We have eaten and drunk in thy presence, and thou hast taught in our streets.
[SUP]27 [/SUP]But he shall say, I tell you, I know you not whence ye are; depart from me, all ye workers of iniquity."