How can Christians have such different beliefs to other Christians?

interpretations and traditions of men that make the word of God void, yet some think it is the right way. they have allowed the word of God to be impregnated with doctrines, dogma, disciplines and lies, so this is why two can be called christian and both see things differently. one will see truth, one will see an opportunity to adjust add and take away from the word of God so that they have something they can still want they want and think they get by with.