God can not change what is true.  However we can and should change our interpretation of God's truth when reason and facts lead us that way. We must realize that the Spirit is here for each and every one of us in each and every generation! Not to listen to Her is a grave wrong.    In fact the RCC has had to change its ideas on many occasions. There is sad clerical delusion that men or one man can ever understand an infallible truth.  Or worse, in some,  it may not be a delusion at all, but indeed, a greedy attempt to control others.   When this institution most embarrasses itself is when it moves so slowly to admit it was wrong.  This is so true also of individual  dogmatists.