And if you believe them you'll go to hell. Sooner or later there is the likelihood that we will question our beliefs or hear the arguments of others who question them and then the mind game comes into play. This is often described as the 'Virus Theory' because it is like being infected by a computer virus. It is not your fault you have not heard of us so when you die you will go to heaven - depending on whether you have lived a good life or not. Both the Bible and the Koran contain texts to this effect.
Children are particularly vulnerable to indoctrination.
As children we are given an interpretation of the universe around us by a variety of factors in the environment in which we develop. We do not know of the existence of these factors because we cannot see the wood for the trees. We might, for example, grow up with a low sense of self-esteem because of the way we are treated by our parents, or conversely, feel that we are better than anybody else because that is the way our family behaves. It is not necessary for anyone specifically to say these things - we pick them up naturally. It may not be until quite late in life that we discover that we have suffered from low self-esteem or behave like snobs.