Personally there I believe that there are tons of secrets of the kingdom and I personally wanted to seek the new gems that make up the deep dark secrets of the kingdom or at least some new revelation to the saints. In hindsight I realize that there are dozens of secrets that always in plain view.
For instance what I have learned is to look at our Jewish cousins and see how we parallel each other in our religious views and beliefs. My wife, before she was mine, dated (man I hope so, gesh) other men. One such fellow was a Rabbi's son. At first she just saw a different religion but in hindsight she began to realize that we had the same sacred rituals and I thought to myself, "What? I though that they had separated themselves from God because they wanted to know the deeper points of the gospel of Jesus Christ and because they veared farther from the root that they 'fell' from grace".
Now I realize that they hadn't forgotten the core elements of the gospel but had changed their viewpoint of the gospel and thus had missed the mark when Jesus came.
So do they know the secrets of the kingdom? Well to some extent, yes. Will they tell anyone? No, not in a million years because of the sacred oaths and covenants that they made to learn those sacred secrets.
One more thing remember to keep your covenents no matter what your faith is. God will reward your faithfulness.