The churchdoes make mistakes, whether one is talking about the leaders of the Church or the rest of us. The Holy Ghost does not make mistakes, and it props up us poor sinners in the Church and keeps us from putting the ship on the rocks and breaking up in the raging seas. As Paul says, we should not boast of the good that we do, but give all credit to the Lord, and confess our unworthiness.
You are right. I should have said in matters of faith or morals.