See that no man seduce you; for many shall come in My name, saying, I am the Christ; and shall seduce many. Then if anyone shall say unto you, Lo here is the Christ, or there, believe it not; for there shall arise false Christs, and false prophets (Matt. 24:4-5, 23-24; Mark 13:21-22). Here by "false Christs" are signified truths not Divine, or falsities; and by "false prophets," those who teach them (n. 2534). And again:

Be not ye called masters, for one is your Master, even Christ (Matt. 23:10);

"Christ" denotes truth Divine. Hence it is evident what a Christian is, namely, one who is in truth from good.