Learn from all, but cling to none, except God Himself. For only He alone is infallible and all-wise.
But God reveals His secrets to those who pursue Him. And God is not a respecter of labels, denominations, or titles.
I have found pursuers of God in Catholic, Orthodox, and Protestant Churches. I have found them in all ages, and in all nations.
The key is to be open to truth no matter where it is found. Even if it’s not from your religion. Because, as St. Augustine said, all truth is God’s truth.
Be humble, be teachable, and listen to the voice of truth in the most unusual places.