Yes, I know. So if I say John 10 tells me I'm not going to be snatch out of the Lord's hand because He is going to care for me, then I'm wrong because the Church states it? That's the same argument they used on Luther with indulgences. It didn't work.
... then you are presuming, sinfully, that you are among the elect and not among those who do not know your master's voice. This parable cuts both ways.
Where exactly does the Scripture say YOU are in the Lord's "hand", as far as the elect goes? All who are predestined for the church are not predestined to the Kingdom of Heaven. This much is clear in that there are sheep who do NOT follow the Lord. Christ tells several parables about those in the field, the Church, who will not be harvested.
You are sadly mistaken if you think that you proclaim "Lord, Lord" and that qualifies you as a member of the elect.
Regards