1. If you call yourself a Christian, and you judge people, you are not a Christian.
Judge not, that ye be not judged. For with what judgment ye judge, ye shall be judged: and with what measure ye mete, it shall be measured to you again. And why beholdest thou the mote that is in thy brother's eye, but considerest not the beam that is in thine own eye? Or how wilt thou say to thy brother, Let me pull out the mote out of thine eye; and, behold, a beam is in thine own eye? [Matthew 7:1-4]
2. If you call yourself a Christian, and you are wealthy while others go without, you are not a Christian.
Jesus said unto him, If thou wilt be perfect, go and sell that thou hast, and give to the poor, and thou shalt have treasure in heaven: and come and follow me. But when the young man heard that saying, he went away sorrowful: for he had great possessions. Then said Jesus unto his disciples, Verily I say unto you, That a rich man shall hardly enter into the kingdom of heaven. And again I say unto you, It is easier for a camel to go through the eye of a needle, than for a rich man to enter into the kingdom of God. [Matthew 19:21-24]
Lay not up for yourselves treasures upon earth, where moth and rust doth corrupt, and where thieves break through and steal. But lay up for yourselves treasures in heaven, where neither moth nor rust doth corrupt, and where thieves do not break through nor steal. [Matthew 6:19-20]
3. If you call yourself a Christian, and you start wars, you are not a Christian.
But I say unto you which hear, Love your enemies, do good to them which hate you, Bless them that curse you, and pray for them which despitefully use you. And unto him that smiteth thee on the one cheek offer also the other; and him that taketh away thy cloke forbid not to take thy coat also. [Luke 6:27-29]
4. If you call yourself a Christian, and think that means nothing but "family values," you are wrong. That oft-quoted phrase where Jesus said he came not to bring peace, but a sword? He wasn't talking about killing people in war, or about killing to defend monetary interests abroad. He was talking about breaking up families.
Think not that I am come to send peace on earth: I came not to send peace, but a sword. For I am come to set a man at variance against his father, and the daughter against her mother, and the daughter in law against her mother in law. And a man's foes shall be they of his own household. He that loveth father or mother more than me is not worthy of me: and he that loveth son or daughter more than me is not worthy of me. [Matthew 10:34-37]
And why call ye me, Lord, Lord, and do not the things which I say? [Luke 6:46]