Source: https://www.bertha-dudde.org/en/proclamation/4673
4673 Consistency of the pure word of God.... change man's work....
June 19, 1949: Book 53
What is from Me will last for eternity, what is of human origin is impermanent, i.e. it changes in a shorter or longer time. And thus My word will remain in existence for eternity, thus My pure word will always be conveyed to people in the same form, yet human will can change it, and this changed word will be reshaped again from time to time because it is not the pure teaching from Me. But you humans will only be able to judge whether what you are commanded is truth if you are enlightened by My spirit, if you make yourselves worthy and capable of being taught by My spirit by living according to My will, thus allowing its working in you. Then it will be possible for you to distinguish truth from error if you use My word, through which I Myself speak to people on earth, as a standard and then compare it with the serious will to recognize the truth. Then you will also understand the meaning of My words and also clearly recognize what is human additional work and it will not be difficult for you to differentiate. Then consider what you feel to be right.... and it will be right, for I Myself guide your thoughts and draw your attention through doubt by speaking to you through the voice of the spirit which expresses itself in the individual's life of feeling. I place doubt into your heart as soon as you carry the serious desire for truth within yourselves, because I want My only true word to be recognized as divine and therefore also want people to learn to distinguish My word from the human word, which they can do with My support, and I will indicate to you the characteristics where My activity begins and My adversary's activity ends.... (20.6.1949) What is from Me can easily be recognized by the love which speaks from every word. This must always be taken into account, after all, only My commandments are given which are based on love for Me and for the neighbour. Therefore it can easily be checked whether what is demanded of people is harmful to their fellow human beings if it is not fulfilled.... Human beings added other commandments to My commandment of love and through these also contaminated My pure teaching, because human statutes thus made My commandments pale and were sometimes more respected than those. In order to justify these humanly issued commandments another meaning was attached to My words and thus the pure word of God was changed, which resulted in a deviation from the pure truth and changed continuously. The explanations of what I spoke as a human being on earth now had to conform to the teachings or human statutes if My word was not to be completely eliminated. And thus error came upon humanity which was only recognized by those who allowed My spirit to take effect in them. But error cannot exist forever, again and again truth is conveyed from above to earth, and again and again action has to be taken against error, yet whether it is successful is up to the human being's will, who can profess both truth and error. Yet only that which comes directly from Me and remains unchanged can be recognized as My word.... Every change is man's work and will also not remain in existence, but My word will remain in existence for all eternity....
Amen
Translated by Doris Boekers