God/ Jesus/ the Holy Spirit and Mother Mary stay the same. Their love for us stays the same. The truth of Jesus stays the same.
Men’s interpretations can be faulty and can change, adapt and evolve. There are many historic occasions where so-called Christians did not act in a loving way towards their fellows. And there are occasions today when they do not. Asking WWJD makes it pretty easy for me to see what is “of God” and what is “of men”.
The quest for secular power is behind a lot of the evils.