CHRISTIANITY IS DIFFERENT TO CHRISTENDOM BECAUSE CHRIST'S KINGDOM IS NOT REIGNING ON EARTH. The Kingdom Of Christ Currently Is Found In The Hearts Of People Who Have Experienced Spiritual Rebirth. Not everybody who claims to be born again is truly living a life in the Kingdom of God, even though they may be living in Christendom.

If you don't abide by every single aspect of Christianity aren't you taking 'God's name in vain' by calling yourself a Christian?

Referring mainly to those that cherry-pick and/or knowingly disregard certain Christian laws/practices. E.g. Those that have sex before marriage, leaders that declare war, soldiers that kill other humans.

Harry Riches Answer requested by Preety Lodia

When you talk about every aspect of Christianity, you have to distinguish between Christendom, matters pertaining to Christianity that have no biblical authority, and what is required of a true Christian.

According to the Bible, every person who believes in the name of the Lord Jesus Christ and who is baptized will be saved. Now believing in the name of Lord Jesus Christ requires a person to acknowledge that Lord Jesus Christ is the Son of God.

Anyone who does not accept that Lord Jesus Christ is the Son of God cannot know the Father.

• No one who denies the Son has the Father. He who confesses the Son has the Father also. (1 John 2:23)
• Jesus said to her, “I am the resurrection and the life; he who believes in me, though he die, yet shall he live.” John 11:25

However, we must always remember that when a person believes something to be true, they need a reason. Many people believe what they are indoctrinated with at school, and they will tell you that you are a fool if you do not accept their belief about what happened millions or billions of years ago. They have not real proof, but they are sure they are correct because they have been indoctrinated to accept unsubstantiated dogma based upon an unscientific theory that cannot be proven in real time—as true science requires.

Now when it comes to accepting the truth about the existence of the spiritual realm, Jesus told us to consider the wind. You cannot see it. But you can feel it. You cannot catch the wind to put it under a microscope to analyse it. The wind is the result of the movement of molecules that consists of oxygen and hydrogen and, probably, various other gases. But determining the gases is not the same as catching the wind. Yet we feel the wind, even if we cannot catch it and put it in a jar for all to see.

(Instruments might detect the wind, but little do those conducting the experiments know that they are also detecting the existence of the Kingdom of God—for it is as the wind—only they will scoff at this idea; yet they will believe that a minor mutation is evidence of birds turning into dinosaurs, or something else just as ludicrous.)

Jesus said that we must be born spiritually if we are to see the Kingdom of God and if we are to enter into the Kingdom of God. Evidently, seeing the Kingdom is like seeing a house but not entering it, because you are still outside. Nevertheless, when a person is born spiritually, Jesus equates this with the wind.

• The wind blows where it wills, and you hear the sound of it, but you do not know whence it comes or whither it goes; so it is with every one who is born of the Spirit.” John 3:8

The wind blows where it wills, but even if you do not hear it, you will feel it. Likewise, we do not see the Kingdom of God until we are born of it. But we know that there is a matter of good and evil that we all have to acknowledge when it comes to relationships. Evil is harm caused to another.

Good and evil within relationships is defined by the Ten Commandments. For those who are members of the Kingdom of God, the Ten Commandments are known as the Royal Law.

• If you really fulfil the royal law, according to the scripture, “You shall love your neighbor as yourself,” you do well. (James 2:8)

Now some people think of the Royal Law as the golden rule. Only it is not a rule that one has to abide by, because this is a divine principle, a fundamental truth, a law of life that is found only among those who are genuine members of the Kingdom of God.

You imply in your question that people are taking the name of God in vain if they do not keep every variation of expression or rule within Christendom that is performed or required as a part of certain traditions that claim to be adherents of Christianity. What needs to be understood is a distinction exists between biblical Christianity and Christendom's many varieties; for the Bible has its own creed.

This is a very simple creed that requires us to believe in the Son of God and allow the reality of the resurrected Lord Jesus Christ to give us the power to overcome the world and its evil ways.

• Every one who believes that Jesus is the Christ is a child of God, and every one who loves the parent loves the child. By this we know that we love the children of God, when we love God and obey his commandments. For this is the love of God, that we keep his commandments. And his commandments are not burdensome. For whatever is born of God overcomes the world; and this is the victory that overcomes the world, our faith. Who is it that overcomes the world but he who believes that Jesus is the Son of God? (1 John 5:1–5)

Those who are born of God are not deceived if they continue towards the Kingdom of God and enter through its gates. People who do enter into the Kingdom of God are always known to demonstrate a changed lifestyle, not because they are law keepers, but because the love of God becomes evident in their lives and what they do is what the law of God requires.

Unless You Understand The Truth, You Will Not Experience The Freedom To Love